MARKET STUDY All analysis covers resale homes only. New construction appears once, in its own section. Click any dot on the map for that sale.
Resale sales, 365 days
27
single-family resale homes
Median net sale price
$518,500
average $509,504
Median net price per SF
$347
average $336
Median days on market
66 days
average 88 days
1. SummaryResale homes · 27 sales · October 26, 2025 – October 25, 2026
This study looks at the 27 resale homes sold in Windsor Park in the 365 days to October 25, 2026. A full year is used because only 10 resale homes sold in the last 180 days. New construction is left out and shown on its own in section 7. The homes are compared four ways: by price, by living area, by year built and with or without a view. The first three are split into four equal groups (quartiles), each named by its range.
Each comparison has its own section (3–6) with everything about it in one place: the key differences, a table of every measure at a glance, the charts and the numbers.
2. Where the resale homes sold27 resale homes · colored by price range
Each dot is one resale home, colored by its price range. Use the buttons to show one price range at a time. Click a dot for that sale: address, close date, original and last list price, net sale price, living area, net sale per SF and days on market. Scroll or pinch to zoom.
3. Quartiles by net sale priceResale homes · 27 sales · October 26, 2025 – October 25, 2026
Sales ranked by net sale price and cut into four equal groups. This is the usual way to read a market by price.
Bottom line
Homes over $633K are about 700 SF (61%) larger than homes under $389K.
Homes over $633K sell for about $127 per SF (49%) more than homes under $389K.
3.1 Key differences
The top group against the bottom group. Only real differences are listed. Section 8 explains each measure.
Under $389K$389K–$518K$537K–$633KOver $633K
Higher-priced homes Over $633K
Are much larger.
Sell for more per square foot.
Lower-priced homes Under $389K
Are much smaller.
Sell for less per square foot.
3.2 At a glance
Shaded rows are real differences; the darkest cell is the highest. Gray rows show no clear difference. Prices are averages; days on market and year built are medians.
Under $389K
$389K–$518K
$537K–$633K
Over $633K
Real difference?
Net price per SF
$258 per SFLowest
$342 per SF
$364 per SF
$384 per SFHighest
✓ large
Living area
1,151 SFSmallest
1,387 SF
1,696 SF
1,849 SFLargest
✓ large
Year built
1958
1957
1956
1956
unclear
Days on market
111 days
17 days
116 days
31 days
unclear
Discount from original list
18.6%
7.5%
10.3%
5.2%
unclear
Price cut before sale
71%
43%
67%
43%
unclear
Seller paid closing costs or repairs
14%
71%
67%
29%
unclear
Has a view
14%
0%
33%
0%
unclear
How to read this section. Each heading gives the finding. The gold box says whether the gap is real (✓, with its size) or could be chance (–). The section ends with its numbers; the tests are in section 8.3.
3.3 Homes over $633K sell for about $127 per SF (49%) more than homes under $389K
The average is $384 per SF for homes over $633K and $258 per SF for homes under $389K. It rises step by step from the lowest range to the highest. Defined in 8.1.2.
✓ Real difference · large
3.4 Homes over $633K are about 700 SF (61%) larger than homes under $389K
The average is 1,849 SF for homes over $633K and 1,151 SF for homes under $389K. It rises step by step from the lowest range to the highest. Defined in 8.1.3.
✓ Real difference · large
3.5 Year built: no clear difference
The median is 1956 for homes over $633K and 1958 for homes under $389K. It falls step by step from the lowest range to the highest. Defined in 8.1.4.
– No clear difference · could be chance
3.6 Days on market: no clear difference
The median is 31 days for homes over $633K and 111 days for homes under $389K. It does not move in a straight line; homes $537K–$633K are highest. Defined in 8.1.5.
– No clear difference · could be chance
3.7 Discount from original list: no clear difference
The average is 5.2% for homes over $633K and 18.6% for homes under $389K. It does not move in a straight line; homes under $389K are highest. Defined in 8.1.6.
– No clear difference · could be chance
3.8 How often: price cut before sale, seller paid closing costs or repairs, has a view
Each bar is the share of homes in the group, in percent.
43% of homes over $633K had a price cut before sale, against 71% of homes under $389K. Defined in 8.1.7.
29% of homes over $633K had the seller pay closing costs or repairs, against 14% of homes under $389K. Defined in 8.1.8.
0% of homes over $633K have a view, against 14% of homes under $389K. Defined in 8.1.9.
Price cut before sale: – No clear difference · could be chance
Seller paid closing costs or repairs: – No clear difference · could be chance
Has a view: – No clear difference · could be chance
3.9 The numbers: price and size
Under $389K7 sales
$389K–$518K7 sales
$537K–$633K6 sales
Over $633K7 sales
All27 sales
Real difference?
Net sale price average
$289,343
$462,822
$587,500
$709,493
$509,504
by design
Net price per SF average
$258
$342
$364
$384
$336
✓ large
Living area average
1,151
1,387
1,696
1,849
1,514
✓ large
Year built median
1958
1957
1956
1956
1957
unclear
3.10 The numbers: selling
Under $389K7 sales
$389K–$518K7 sales
$537K–$633K6 sales
Over $633K7 sales
All27 sales
Real difference?
Days on market median
111
17
116
31
66
unclear
Discount from original list average
18.6%
7.5%
10.3%
5.2%
10.4%
unclear
Price cut before sale
71%
43%
67%
43%
56%
unclear
Seller paid closing costs or repairs
14%
71%
67%
29%
44%
unclear
Has a view
14%
0%
33%
0%
11%
unclear
Prices, price per SF, living area and discount are averages; days on market and year built are medians. The test behind each verdict is in 8.3.1.
4. Quartiles by living areaResale homes · 27 sales · October 26, 2025 – October 25, 2026
Sales ranked by living area and cut into four equal groups, from the smallest homes to the largest.
Bottom line
Homes over 1,812 SF sell for about $298K (81%) more than homes under 1,188 SF.
4.1 Key differences
The top group against the bottom group. Only real differences are listed. Section 8 explains each measure.
Under 1,188 SF1,188–1,495 SF1,543–1,812 SFOver 1,812 SF
Larger homes Over 1,812 SF
Sell for much more.
Smaller homes Under 1,188 SF
Sell for much less.
4.2 At a glance
Shaded rows are real differences; the darkest cell is the highest. Gray rows show no clear difference. Prices are averages; days on market and year built are medians.
Under 1,188 SF
1,188–1,495 SF
1,543–1,812 SF
Over 1,812 SF
Real difference?
Net sale price
$369KLowest
$389K
$627K
$667KHighest
✓ large
Net price per SF
$360 per SF
$290 per SF
$378 per SF
$332 per SF
unclear
Year built
1958
1956
1957
1956
unclear
Days on market
65 days
100 days
84 days
49 days
unclear
Discount from original list
8.2%
15.7%
10.5%
6.3%
unclear
Price cut before sale
50%
62%
83%
29%
unclear
Seller paid closing costs or repairs
33%
38%
33%
71%
unclear
Has a view
33%
0%
17%
0%
unclear
4.3 Homes over 1,812 SF sell for about $298K (81%) more than homes under 1,188 SF
The average is $667K for homes over 1,812 SF and $369K for homes under 1,188 SF. It rises step by step from the lowest range to the highest. Defined in 8.1.1.
✓ Real difference · large
4.4 Net price per SF: no clear difference
The average is $332 per SF for homes over 1,812 SF and $360 per SF for homes under 1,188 SF. It does not move in a straight line; homes 1,543–1,812 SF are highest. Defined in 8.1.2.
– No clear difference · could be chance
4.5 Year built: no clear difference
The median is 1956 for homes over 1,812 SF and 1958 for homes under 1,188 SF. It does not move in a straight line; homes under 1,188 SF are highest. Defined in 8.1.4.
– No clear difference · could be chance
4.6 Days on market: no clear difference
The median is 49 days for homes over 1,812 SF and 65 days for homes under 1,188 SF. It does not move in a straight line; homes 1,188–1,495 SF are highest. Defined in 8.1.5.
– No clear difference · could be chance
4.7 Discount from original list: no clear difference
The average is 6.3% for homes over 1,812 SF and 8.2% for homes under 1,188 SF. It does not move in a straight line; homes 1,188–1,495 SF are highest. Defined in 8.1.6.
– No clear difference · could be chance
4.8 How often: price cut before sale, seller paid closing costs or repairs, has a view
Each bar is the share of homes in the group, in percent.
29% of homes over 1,812 SF had a price cut before sale, against 50% of homes under 1,188 SF. Defined in 8.1.7.
71% of homes over 1,812 SF had the seller pay closing costs or repairs, against 33% of homes under 1,188 SF. Defined in 8.1.8.
0% of homes over 1,812 SF have a view, against 33% of homes under 1,188 SF. Defined in 8.1.9.
Price cut before sale: – No clear difference · could be chance
Seller paid closing costs or repairs: – No clear difference · could be chance
Has a view: – No clear difference · could be chance
4.9 The numbers: price and size
Under 1,188 SF6 sales
1,188–1,495 SF8 sales
1,543–1,812 SF6 sales
Over 1,812 SF7 sales
All27 sales
Real difference?
Net sale price average
$368,797
$389,359
$627,167
$666,565
$509,504
✓ large
Net price per SF average
$360
$290
$378
$332
$336
unclear
Living area average
1,023
1,338
1,659
2,013
1,514
by design
Year built median
1958
1956
1957
1956
1957
unclear
4.10 The numbers: selling
Under 1,188 SF6 sales
1,188–1,495 SF8 sales
1,543–1,812 SF6 sales
Over 1,812 SF7 sales
All27 sales
Real difference?
Days on market median
65
100
84
49
66
unclear
Discount from original list average
8.2%
15.7%
10.5%
6.3%
10.4%
unclear
Price cut before sale
50%
62%
83%
29%
56%
unclear
Seller paid closing costs or repairs
33%
38%
33%
71%
44%
unclear
Has a view
33%
0%
17%
0%
11%
unclear
Prices, price per SF, living area and discount are averages; days on market and year built are medians. The test behind each verdict is in 8.3.2.
5. Quartiles by year builtResale homes · 27 sales · October 26, 2025 – October 25, 2026
Sales ranked by year built and cut into four groups, from the oldest to the newest. Homes built in the same year always stay in the same group, so group sizes can differ a little.
Bottom line: too few sales to test.
5.1 Key differences
The top group against the bottom group: no measure differs enough to rule out chance.
5.3 Net sale price: described, not tested
The average is $449K for homes built after 1958 and $618K for homes built before 1956. It does not move in a straight line; homes built before 1956 are highest. Defined in 8.1.1.
Not tested: too few sales.
5.4 Net price per SF: described, not tested
The average is $288 per SF for homes built after 1958 and $383 per SF for homes built before 1956. It does not move in a straight line; homes built before 1956 are highest. Defined in 8.1.2.
Not tested: too few sales.
5.5 Living area: described, not tested
The average is 1,555 SF for homes built after 1958 and 1,639 SF for homes built before 1956. It does not move in a straight line; homes built before 1956 are highest. Defined in 8.1.3.
Not tested: too few sales.
5.6 Days on market: described, not tested
The median is 16 days for homes built after 1958 and 82 days for homes built before 1956. It does not move in a straight line; homes built 1956 are highest. Defined in 8.1.5.
Not tested: too few sales.
5.7 Discount from original list: described, not tested
The average is 6.6% for homes built after 1958 and 7.9% for homes built before 1956. It does not move in a straight line; homes built 1956 are highest. Defined in 8.1.6.
Not tested: too few sales.
5.8 How often: price cut before sale, seller paid closing costs or repairs, has a view
Each bar is the share of homes in the group, in percent.
20% of homes built after 1958 had a price cut before sale, against 50% of homes built before 1956. Defined in 8.1.7.
20% of homes built after 1958 had the seller pay closing costs or repairs, against 38% of homes built before 1956. Defined in 8.1.8.
0% of homes built after 1958 have a view, against 12% of homes built before 1956. Defined in 8.1.9.
Price cut before sale: Not tested: too few sales.
Seller paid closing costs or repairs: Not tested: too few sales.
Has a view: Not tested: too few sales.
5.9 The numbers: price and size
Before 19568 sales
19564 sales
1957–195810 sales
After 19585 sales
All27 sales
Net sale price average
$618,419
$450,788
$476,310
$448,600
$509,504
Net price per SF average
$383
$295
$339
$288
$336
Living area average
1,639
1,470
1,412
1,555
1,514
Year built median
1954
1956
1958
1961
1957
5.10 The numbers: selling
Before 19568 sales
19564 sales
1957–195810 sales
After 19585 sales
All27 sales
Days on market median
82
122
85
16
66
Discount from original list average
7.9%
18.4%
11.1%
6.6%
10.4%
Price cut before sale
50%
50%
80%
20%
56%
Seller paid closing costs or repairs
38%
75%
50%
20%
44%
Has a view
12%
0%
20%
0%
11%
Prices, price per SF, living area and discount are averages; days on market and year built are medians. The test behind each verdict is in 8.3.3.
6. View and no viewResale homes · 27 sales · October 26, 2025 – October 25, 2026
Sales where the MLS lists a view (greenbelt or park, trees, golf course, hill country, water and similar) against those listing none or only the neighborhood. 1 sales whose MLS view entry is only “See Remarks” are left out.
Bottom line: too few sales to test.
6.1 Key differences
The top group against the bottom group: no measure differs enough to rule out chance.
6.3 Net sale price: described, not tested
The average is $464K for homes with a view and $510K for homes without a view. Defined in 8.1.1.
Not tested: too few sales.
6.4 Net price per SF: described, not tested
The average is $396 per SF for homes with a view and $330 per SF for homes without a view. Defined in 8.1.2.
Not tested: too few sales.
6.5 Living area: described, not tested
The average is 1,179 SF for homes with a view and 1,533 SF for homes without a view. Defined in 8.1.3.
Not tested: too few sales.
6.6 Year built: described, not tested
The median is 1957 for homes with a view and 1957 for homes without a view. Defined in 8.1.4.
Not tested: too few sales.
6.7 Days on market: described, not tested
The median is 120 days for homes with a view and 58 days for homes without a view. Defined in 8.1.5.
Not tested: too few sales.
6.8 Discount from original list: described, not tested
The average is 11.2% for homes with a view and 10.7% for homes without a view. Defined in 8.1.6.
Not tested: too few sales.
6.9 How often: price cut before sale, seller paid closing costs or repairs
Each bar is the share of homes in the group, in percent.
67% of homes with a view had a price cut before sale, against 57% of homes without a view. Defined in 8.1.7.
33% of homes with a view had the seller pay closing costs or repairs, against 43% of homes without a view. Defined in 8.1.8.
Price cut before sale: Not tested: too few sales.
Seller paid closing costs or repairs: Not tested: too few sales.
6.10 The numbers: price and size
View3 sales
No view23 sales
All26 sales
Net sale price average
$464,333
$510,026
$504,754
Net price per SF average
$396
$330
$337
Living area average
1,179
1,533
1,492
Year built median
1957
1957
1957
6.11 The numbers: selling
View3 sales
No view23 sales
All26 sales
Days on market median
120
58
62
Discount from original list average
11.2%
10.7%
10.7%
Price cut before sale
67%
57%
58%
Seller paid closing costs or repairs
33%
43%
42%
Prices, price per SF, living area and discount are averages; days on market and year built are medians. The test behind each verdict is in 8.3.4.
7. New constructionBasic statistics · 0 sales · October 26, 2025 – October 25, 2026
Homes sold new by the builder in the same 365 days. They are left out of every other section and shown here as basic figures only: 0 sales, no groups, no tests.
Note: these are only the new-construction sales reported in ABOR MLS. Builders often sell homes without listing them in the MLS, so these figures do not necessarily represent all new-construction sales in Windsor Park.
No new-construction sales were reported in ABOR MLS in this window.
Same definitions as the rest of the study (section 8). New construction = NewConstructionYN true, or PropertyCondition “New Construction” or “Under Construction”.
8. AppendixMeasures, methods and tests
Each measure and method three ways: in plain words, as statistics, and with the data from this study.
8.1 Measures
8.1.1 Net sale price
In simple terms
What the seller actually kept: the closing price, less money the seller gave back to the buyer for closing costs or repairs. It is the truest price for comparing homes.
Statistically
Net = ClosePrice − ACTRIS_BuyersClsgCostPdbySell − ACTRIS_RepairsAmount (a blank counts as $0). Summarized by the arithmetic mean in the slices.
The data
27 resale sales. Average $509,504; median $518,500; standard deviation $169,728; middle half (25th–75th percentile) $363,192–$636,000; lowest $167,500, highest $846,000. 12 sales had a seller payment; their median payment was $10,273.
8.1.2 Net price per SF
In simple terms
Net sale price divided by the heated and cooled square feet. It puts homes of different sizes on the same footing: did buyers pay more for each square foot, not just for more square feet?
Statistically
psf = Net ÷ LivingArea, per sale; summarized by the mean of the per-sale ratios.
The data
27 resale sales. Average $336; median $347; standard deviation $77; middle half (25th–75th percentile) $301–$383; lowest $141, highest $538.
8.1.3 Living area
In simple terms
The heated and cooled space, as listed in the MLS. Garages and porches are not counted.
Statistically
RESO LivingArea, in square feet. Sales under 400 SF are treated as entry errors and left out.
The data
27 resale sales. Average 1,514; median 1,495; standard deviation 385; middle half (25th–75th percentile) 1,188–1,831; lowest 915, highest 2,098.
8.1.4 Year built
In simple terms
The year the home was finished, as listed in the MLS. It shows whether a group leans to older or newer phases of the community.
Statistically
RESO YearBuilt; summarized by the median, with the 25th–75th percentile (middle half) on the charts.
The data
27 resale sales. Average 1957; median 1957; standard deviation 3; middle half (25th–75th percentile) 1955–1958; lowest 1954, highest 1967.
8.1.5 Days on market
In simple terms
How many days the home was on the market before the buyer's offer was accepted, counting any earlier listing periods (relists). This is the days on market agents and clients quote.
Statistically
CDOM = max(CumulativeDaysOnMarket, DaysOnMarket, PurchaseContractDate − ListingContractDate). The MLS counter can freeze at a price change, so the contract-date gap is a floor. Summarized by the median, because a few homes that sat for months pull an average up.
The data
27 resale sales. Average 88; median 66; standard deviation 89; middle half (25th–75th percentile) 16–126; lowest 3, highest 373. 0 sales went under contract on their listing date (0 days).
8.1.6 Discount from original list
In simple terms
How far below the first asking price the home sold, after seller payments. It measures how much negotiating room sellers gave up. A negative figure means the home sold above its first asking price.
Statistically
Discount % = (OriginalListPrice − Net) ÷ OriginalListPrice × 100, per sale; summarized by the mean.
The data
27 resale sales. Average 10.4%; median 10.2%; standard deviation 10.8%; middle half (25th–75th percentile) 4.0%–15.2%; lowest −3.8%, highest 52.1%. 3 sales closed above their first asking price.
8.1.7 Price cut before sale
In simple terms
The asking price was lowered at least once before the home went under contract.
Statistically
Indicator: ListPrice at close < OriginalListPrice. Reported as the share of sales (%).
The data
15 of 27 resale sales (55.6%).
8.1.8 Seller paid closing costs or repairs
In simple terms
The seller paid some of the buyer's closing costs or repairs.
Statistically
Indicator: ACTRIS_BuyersClsgCostPdbySell + ACTRIS_RepairsAmount > 0. Reported as the share of sales (%).
The data
12 of 27 resale sales (44.4%).
8.1.9 Has a view
In simple terms
The MLS says the home looks over something: a greenbelt or park, trees, golf course, hill country, water and similar.
Statistically
View = the View field holds any entry other than “None”, “Neighborhood” or “See Remarks”. No view = only “None” and/or “Neighborhood”. A record whose only entry is “See Remarks” cannot be classified and is left out of the view slice.
The data
3 sales with a view, 23 without, 1 unclassified. Most common View entries: None 15, Neighborhood 9, Creek/Stream 2, Park/Greenbelt 2, See Remarks 1.
8.2 Methods
8.2.1 Data source
In simple terms
Every figure comes from the Austin Board of REALTORS® MLS, read live by ALEX. No figure is estimated or typed in.
Statistically
Bridge Interactive RESO Web API (OData), ABOR dataset, every field returned. Filter: StandardStatus = Closed, PropertyType = Residential, City = Austin, SubdivisionName contains any of “windsor park”, “meadowbrook” (case-insensitive). A record is kept when its subdivision name belongs to the Windsor Park family, the same rule comparable sales use (it includes Meadowbrook Sec 01, proven adjacent and priced alike).
The data
Pulled October 26, 2026: 28 closed Windsor Park records over the prior year, in ZIP 78723. 12 subdivision spellings kept: Windsor Park (6); Windsor Park Sec 01 (4); Windsor Park 02 Sec 03 (3); Windsor Park 02 Sec 01 (3); Meadowbrook Sec 01 (3); Windsor Park 03 Sec 01 (3); Windsor Park Sec 02 (1); Windsor Park 02 Sec 04 (1); Windsor Park 03 Sec 02 (1); Windsor Park Sec 03 (1); Windsor Park 02 Sec 05 (1); Windsor Park 03 Sec 03 (1). Names found by the search but not part of Windsor Park, left out: Windsor Park Hills Sec 03 (4); Windsor Park Hills Sec 06 (2); Windsor Park Hills Sec 07 (2); WINDSOR PARK HILLS (1); Windsor Park Hills Sec 04 (1); Windsor Park Hills Sec 01 (1); Windsor Park Hills (1); Windsor Park (Gaston Park) (1); Windsor Park Iii Sec 4 First R (1).
8.2.2 Study window
In simple terms
The most recent 365 days of closed sales: recent enough to describe today's market, long enough to give each group plenty of sales. The usual window is 180 days; it holds only 10 resale sales here (under 80), so the full year is used.
Statistically
CloseDate from October 26, 2025 to October 25, 2026 inclusive.
The data
27 single-family sales in the window: 27 resale, 0 new construction.
8.2.3 Resale and new construction
In simple terms
A resale home was previously owned. New construction is sold by the builder and behaves differently, so it is kept out of every analysis and reported once on its own.
Statistically
New construction = NewConstructionYN true, or PropertyCondition contains “New Construction” or “Under Construction”. Everything else is resale.
The data
27 resale; 0 new construction.
8.2.4 Sales left out
In simple terms
A few records cannot be used as entered and are left out before any analysis.
Statistically
Excluded: PropertySubType other than Single Family Residence; no OriginalListPrice; LivingArea under 400 SF; seller payments above 10% of ClosePrice (treated as entry errors).
The data
1 sale(s) other than single-family homes (condo, townhome and similar)
8.2.5 Quartiles and groups
In simple terms
Sales lined up from lowest to highest and cut into four groups of about equal size. Each group is named by its range, for example “Under $389K”.
Statistically
Sort by the slicing variable; cut k sits at round(nk/4), k = 1…3. A cut that would split tied values moves to the nearer edge of the tie. A group under 3 sales merges into its smaller neighbor. Range names use the next group's lowest value (“Under”) and the previous group's highest value (“Over”/“After”).
The data
Quartiles by net sale price: Under $389K: $167,500–$337,500 (7 sales); $389K–$518K: $388,884–$518,500 (7 sales); $537K–$633K: $537,000–$633,000 (6 sales); Over $633K: $639,000–$846,000 (7 sales) Quartiles by living area: Under 1,188 SF: 915–1,170 SF (6 sales); 1,188–1,495 SF: 1,188–1,495 SF (8 sales); 1,543–1,812 SF: 1,543–1,812 SF (6 sales); Over 1,812 SF: 1,850–2,098 SF (7 sales) Quartiles by year built: Before 1956: 1954–1955 (8 sales); 1956: 1956–1956 (4 sales); 1957–1958: 1957–1958 (10 sales); After 1958: 1959–1967 (5 sales) View and no view: View: MLS lists a view (3 sales); No view: None or Neighborhood (23 sales)
8.2.6 Average and median
In simple terms
The average adds the values and divides by how many; one very expensive home can pull it up. The median is the middle value, with half above and half below.
Statistically
Mean x̄ = (1/n) Σ xᵢ; median = 50th percentile. Price, price per SF, living area and discount use the mean; days on market and year built use the median (skewed or whole-year values).
The data
Net sale price: average $509,504, median $518,500. Days on market: average 88, median 66: the average is pulled up by a few long listings.
8.2.7 Kruskal–Wallis test
In simple terms
Checks whether a measure really differs across the four groups of a slice. It uses each sale's rank, not its value, so a few extreme sales cannot drive the answer.
Statistically
H = [12/(n(n+1))] Σ Rⱼ²/nⱼ − 3(n+1), compared with χ² on k − 1 degrees of freedom (Kruskal & Wallis, 1952). Effect size ε² = H/(n − 1): ≥ .01 small, ≥ .06 medium, ≥ .14 large (Tomczak & Tomczak, 2014). A slice is tested only when every group has at least 5 sales; smaller groups are described, not tested.
The data
Run on every measure in sections 3–5; each result is in 8.3.
8.2.8 Mann–Whitney U test
In simple terms
The same check when there are only two groups: view against no view.
Statistically
Two-sided U test (Mann & Whitney, 1947). Effect size = rank-biserial correlation |1 − 2U/(n₁n₂)|: ≥ .10 small, ≥ .30 medium, ≥ .50 large (Kerby, 2014; Cohen, 1988).
The data
Run on every measure in section 6; results in 8.3.
8.2.9 Chi-square test
In simple terms
Checks whether a yes/no share (price cut, seller payment, view) differs between groups more than chance would.
Statistically
Pearson χ² on the 2 × k table of counts, no continuity correction (Pearson, 1900). Effect size Cramér's V = √(χ²/n): ≥ .10 small, ≥ .30 medium, ≥ .50 large (Cramér, 1946).
The data
Run on the three shares in every slice; results in 8.3.
8.2.10 Real difference (significance)
In simple terms
“Real difference” means a gap this large would be very unlikely if the groups were really alike. Because many measures are checked in each slice, the bar is set higher than usual.
Statistically
Significant when p < 0.05 ÷ m, where m is the number of measures tested in that slice (Bonferroni; Dunn, 1961). The slicing variable itself differs by design and is not tested.
The data
Quartiles by net sale price: m = 8, threshold p < 0.0063; Quartiles by living area: m = 8, threshold p < 0.0063
8.2.11 Size of a difference
In simple terms
A difference can be real but small. The size word (small, medium, large) says how much the groups pull apart.
Statistically
ε² for Kruskal–Wallis, rank-biserial r for Mann–Whitney, Cramér's V for chi-square, with the thresholds above; below the small threshold the size is “negligible”.
The data
3 real differences across the four slices; sizes are listed in 8.3.
8.2.12 Rounding in the text
In simple terms
Headings and sentences round figures so they read easily; the tables at the end of each section give them in full.
Statistically
Prices in headings round to the nearest $1K; price per SF and days on market to the nearest whole number; living area to the nearest 10 SF; shares and percentage gaps to whole percents.
The data
Days on market is always shown in days.
8.3 Test results
Every test behind every gold box. Statistic, degrees of freedom (df), p-value, the threshold it must beat, and the size of the difference.
8.3.1 Quartiles by net sale price
Measure
Test
Statistic
df
p-value
Threshold
Real difference?
Effect size
Size
Net price per SF
Kruskal–Wallis
H = 12.98
3
0.0047
p < 0.0063
Yes
ε² = 0.499
large
Living area
Kruskal–Wallis
H = 14.25
3
0.0026
p < 0.0063
Yes
ε² = 0.548
large
Year built
Kruskal–Wallis
H = 2.30
3
0.5129
p < 0.0063
Unclear
ε² = 0.088
medium
Days on market
Kruskal–Wallis
H = 4.59
3
0.2044
p < 0.0063
Unclear
ε² = 0.177
large
Discount from original list
Kruskal–Wallis
H = 6.78
3
0.0794
p < 0.0063
Unclear
ε² = 0.261
large
Price cut before sale
Chi-square
χ² = 1.93
3
0.5874
p < 0.0063
Unclear
Cramér’s V = 0.267
small
Seller paid closing costs or repairs
Chi-square
χ² = 6.56
3
0.0874
p < 0.0063
Unclear
Cramér’s V = 0.493
medium
Has a view
Chi-square
χ² = 4.82
3
0.1853
p < 0.0063
Unclear
Cramér’s V = 0.423
medium
8.3.2 Quartiles by living area
Measure
Test
Statistic
df
p-value
Threshold
Real difference?
Effect size
Size
Net sale price
Kruskal–Wallis
H = 18.36
3
0.0004
p < 0.0063
Yes
ε² = 0.706
large
Net price per SF
Kruskal–Wallis
H = 5.34
3
0.1485
p < 0.0063
Unclear
ε² = 0.205
large
Year built
Kruskal–Wallis
H = 0.37
3
0.9467
p < 0.0063
Unclear
ε² = 0.014
small
Days on market
Kruskal–Wallis
H = 0.92
3
0.8209
p < 0.0063
Unclear
ε² = 0.035
small
Discount from original list
Kruskal–Wallis
H = 2.56
3
0.4637
p < 0.0063
Unclear
ε² = 0.099
medium
Price cut before sale
Chi-square
χ² = 4.17
3
0.2436
p < 0.0063
Unclear
Cramér’s V = 0.393
medium
Seller paid closing costs or repairs
Chi-square
χ² = 2.82
3
0.4201
p < 0.0063
Unclear
Cramér’s V = 0.323
medium
Has a view
Chi-square
χ² = 5.06
3
0.1673
p < 0.0063
Unclear
Cramér’s V = 0.433
medium
8.3.3 Quartiles by year built
Too few sales in a group to test.
8.3.4 View and no view
Too few sales in a group to test.
8.4 Data notes
Left out of the analysis: 0 new-construction sales (basic statistics only, section 7); 1 sale(s) other than single-family homes (condo, townhome and similar). Statistics: Python, NumPy 2.5.3, SciPy 1.18.1.
8.5 References
Cohen, J. (1988). Statistical Power Analysis for the Behavioral Sciences (2nd ed.). Erlbaum.
Cramér, H. (1946). Mathematical Methods of Statistics. Princeton University Press.
Dunn, O. J. (1961). Multiple comparisons among means. JASA, 56(293), 52–64.
Kerby, D. S. (2014). The simple difference formula: an approach to teaching nonparametric correlation. Comprehensive Psychology, 3, 11.IT.3.1.
Kruskal, W. H., & Wallis, W. A. (1952). Use of ranks in one-criterion variance analysis. JASA, 47(260), 583–621.
Mann, H. B., & Whitney, D. R. (1947). On a test of whether one of two random variables is stochastically larger than the other. Annals of Mathematical Statistics, 18(1), 50–60.
Pearson, K. (1900). On the criterion that a given system of deviations… Philosophical Magazine, 50(302), 157–175.
Tomczak, M., & Tomczak, E. (2014). The need to report effect size estimates revisited. Trends in Sport Sciences, 21(1), 19–25.