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
18
single-family resale homes
Median net sale price
$1,392,500
average $1,552,603
Median net price per SF
$443
average $495
Median days on market
93 days
average 90 days
1. SummaryResale homes · 18 sales · October 26, 2025 – October 25, 2026
This study looks at the 18 resale homes sold in Highland Park West in the 365 days to October 25, 2026. A full year is used because only 9 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 sold18 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 · 18 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: too few sales to test.
3.1 Key differences
The top group against the bottom group: no measure differs enough to rule out chance.
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 Net price per SF: described, not tested
The average is $747 per SF for homes over $1.98M and $384 per SF for homes under $868K. It rises step by step from the lowest range to the highest. Defined in 8.1.2.
Not tested: too few sales.
3.4 Living area: described, not tested
The average is 3,828 SF for homes over $1.98M and 1,693 SF for homes under $868K. It does not move in a straight line; homes $1.64M–$1.98M are highest. Defined in 8.1.3.
Not tested: too few sales.
3.5 Year built: described, not tested
The median is 1997 for homes over $1.98M and 1954 for homes under $868K. It does not move in a straight line; homes over $1.98M are highest. Defined in 8.1.4.
Not tested: too few sales.
3.6 Days on market: described, not tested
The median is 104 days for homes over $1.98M and 81 days for homes under $868K. It does not move in a straight line; homes $1.64M–$1.98M are highest. Defined in 8.1.5.
Not tested: too few sales.
3.7 Discount from original list: described, not tested
The average is 9.4% for homes over $1.98M and 5.4% for homes under $868K. It does not move in a straight line; homes $1.64M–$1.98M are highest. Defined in 8.1.6.
Not tested: too few sales.
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.
50% of homes over $1.98M had a price cut before sale, against 50% of homes under $868K. Defined in 8.1.7.
75% of homes over $1.98M had the seller pay closing costs or repairs, against 50% of homes under $868K. Defined in 8.1.8.
50% of homes over $1.98M have a view, against 0% of homes under $868K. 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.
3.9 The numbers: price and size
Under $868K4 sales
$868K–$1.15M5 sales
$1.64M–$1.98M5 sales
Over $1.98M4 sales
All18 sales
Net sale price average
$603,000
$1,020,500
$1,781,600
$2,881,088
$1,552,603
Net price per SF average
$384
$438
$440
$747
$495
Living area average
1,693
2,352
4,112
3,828
3,023
Year built median
1954
1955
1952
1997
1956
3.10 The numbers: selling
Under $868K4 sales
$868K–$1.15M5 sales
$1.64M–$1.98M5 sales
Over $1.98M4 sales
All18 sales
Days on market median
81
24
114
104
93
Discount from original list average
5.4%
10.7%
12.6%
9.4%
9.8%
Price cut before sale
50%
40%
60%
50%
50%
Seller paid closing costs or repairs
50%
60%
40%
75%
56%
Has a view
0%
40%
20%
50%
28%
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 · 18 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: too few sales to test.
4.1 Key differences
The top group against the bottom group: no measure differs enough to rule out chance.
4.3 Net sale price: described, not tested
The average is $2.19M for homes over 3,934 SF and $678K for homes under 2,205 SF. It does not move in a straight line; homes 3,048–3,934 SF are highest. Defined in 8.1.1.
Not tested: too few sales.
4.4 Net price per SF: described, not tested
The average is $484 per SF for homes over 3,934 SF and $446 per SF for homes under 2,205 SF. It does not move in a straight line; homes 3,048–3,934 SF are highest. Defined in 8.1.2.
Not tested: too few sales.
4.5 Year built: described, not tested
The median is 1952 for homes over 3,934 SF and 1950 for homes under 2,205 SF. It does not move in a straight line; homes 3,048–3,934 SF are highest. Defined in 8.1.4.
Not tested: too few sales.
4.6 Days on market: described, not tested
The median is 74 days for homes over 3,934 SF and 102 days for homes under 2,205 SF. It does not move in a straight line; homes 3,048–3,934 SF are highest. Defined in 8.1.5.
Not tested: too few sales.
4.7 Discount from original list: described, not tested
The average is 5.4% for homes over 3,934 SF and 8.3% for homes under 2,205 SF. It does not move in a straight line; homes 3,048–3,934 SF are highest. Defined in 8.1.6.
Not tested: too few sales.
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.
25% of homes over 3,934 SF had a price cut before sale, against 75% of homes under 2,205 SF. Defined in 8.1.7.
50% of homes over 3,934 SF had the seller pay closing costs or repairs, against 75% of homes under 2,205 SF. Defined in 8.1.8.
50% of homes over 3,934 SF have a view, against 0% of homes under 2,205 SF. 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.
4.9 The numbers: price and size
Under 2,205 SF4 sales
2,205–2,785 SF5 sales
3,048–3,934 SF5 sales
Over 3,934 SF4 sales
All18 sales
Net sale price average
$678,250
$960,300
$2,333,700
$2,190,963
$1,552,603
Net price per SF average
$446
$388
$651
$484
$495
Living area average
1,508
2,500
3,545
4,537
3,023
Year built median
1950
1958
1979
1952
1956
4.10 The numbers: selling
Under 2,205 SF4 sales
2,205–2,785 SF5 sales
3,048–3,934 SF5 sales
Over 3,934 SF4 sales
All18 sales
Days on market median
102
12
132
74
93
Discount from original list average
8.3%
8.3%
15.8%
5.4%
9.8%
Price cut before sale
75%
20%
80%
25%
50%
Seller paid closing costs or repairs
75%
40%
60%
50%
56%
Has a view
0%
40%
20%
50%
28%
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 · 18 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 $1.86M for homes built after 1979 and $1.05M for homes built before 1951. It does not move in a straight line; homes built 1951–1955 are highest. Defined in 8.1.1.
Not tested: too few sales.
5.4 Net price per SF: described, not tested
The average is $521 per SF for homes built after 1979 and $437 per SF for homes built before 1951. It does not move in a straight line; homes built 1951–1955 are highest. Defined in 8.1.2.
Not tested: too few sales.
5.5 Living area: described, not tested
The average is 3,607 SF for homes built after 1979 and 2,408 SF for homes built before 1951. It does not move in a straight line; homes built 1951–1955 are highest. Defined in 8.1.3.
Not tested: too few sales.
5.6 Days on market: described, not tested
The median is 123 days for homes built after 1979 and 72 days for homes built before 1951. It does not move in a straight line; homes built after 1979 are highest. Defined in 8.1.5.
Not tested: too few sales.
5.7 Discount from original list: described, not tested
The average is 8.8% for homes built after 1979 and 6.3% for homes built before 1951. It does not move in a straight line; homes built 1957–1979 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.
50% of homes built after 1979 had a price cut before sale, against 50% of homes built before 1951. Defined in 8.1.7.
75% of homes built after 1979 had the seller pay closing costs or repairs, against 67% of homes built before 1951. Defined in 8.1.8.
0% of homes built after 1979 have a view, against 17% of homes built before 1951. 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 19516 sales
1951–19553 sales
1957–19795 sales
After 19794 sales
All18 sales
Net sale price average
$1,045,333
$2,103,451
$1,586,600
$1,857,875
$1,552,603
Net price per SF average
$437
$558
$507
$521
$495
Living area average
2,408
3,714
2,877
3,607
3,023
Year built median
1950
1952
1958
2015
1956
5.10 The numbers: selling
Before 19516 sales
1951–19553 sales
1957–19795 sales
After 19794 sales
All18 sales
Days on market median
72
35
109
123
93
Discount from original list average
6.3%
7.1%
16.3%
8.8%
9.8%
Price cut before sale
50%
0%
80%
50%
50%
Seller paid closing costs or repairs
67%
67%
20%
75%
56%
Has a view
17%
67%
40%
0%
28%
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 · 18 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.
Bottom line: no measure differs enough between the groups to rule out chance.
6.1 Key differences
The top group against the bottom group: no measure differs enough to rule out chance.
6.2 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.
View
No view
Real difference?
Net sale price
$2.22M
$1.30M
unclear
Net price per SF
$592 per SF
$458 per SF
unclear
Living area
3,558 SF
2,817 SF
unclear
Year built
1952
1957
unclear
Days on market
76 days
95 days
unclear
Discount from original list
13.3%
8.4%
unclear
Price cut before sale
40%
54%
unclear
Seller paid closing costs or repairs
40%
62%
unclear
6.3 Net sale price: no clear difference
The average is $2.22M for homes with a view and $1.30M for homes without a view. Defined in 8.1.1.
– No clear difference · could be chance
6.4 Net price per SF: no clear difference
The average is $592 per SF for homes with a view and $458 per SF for homes without a view. Defined in 8.1.2.
– No clear difference · could be chance
6.5 Living area: no clear difference
The average is 3,558 SF for homes with a view and 2,817 SF for homes without a view. Defined in 8.1.3.
– No clear difference · could be chance
6.6 Year built: no clear difference
The median is 1952 for homes with a view and 1957 for homes without a view. Defined in 8.1.4.
– No clear difference · could be chance
6.7 Days on market: no clear difference
The median is 76 days for homes with a view and 95 days for homes without a view. Defined in 8.1.5.
– No clear difference · could be chance
6.8 Discount from original list: no clear difference
The average is 13.3% for homes with a view and 8.4% for homes without a view. Defined in 8.1.6.
– No clear difference · could be chance
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.
40% of homes with a view had a price cut before sale, against 54% of homes without a view. Defined in 8.1.7.
40% of homes with a view had the seller pay closing costs or repairs, against 62% of homes without a view. Defined in 8.1.8.
Price cut before sale: – No clear difference · could be chance
Seller paid closing costs or repairs: – No clear difference · could be chance
6.10 The numbers: price and size
View5 sales
No view13 sales
All18 sales
Real difference?
Net sale price average
$2,221,170
$1,295,462
$1,552,603
unclear
Net price per SF average
$592
$458
$495
unclear
Living area average
3,558
2,817
3,023
unclear
Year built median
1952
1957
1956
unclear
6.11 The numbers: selling
View5 sales
No view13 sales
All18 sales
Real difference?
Days on market median
76
95
93
unclear
Discount from original list average
13.3%
8.4%
9.8%
unclear
Price cut before sale
40%
54%
50%
unclear
Seller paid closing costs or repairs
40%
62%
56%
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 8.3.4.
7. New constructionBasic statistics · 1 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: 1 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 Highland Park West.
Measure
Average
Median
Sales
1
Net sale price
$2,286,198
$2,286,198
Net price per SF
$655
$655
Living area (SF)
3,490
3,490
Days on market
79
79
Discount from original list
8.4%
8.4%
Price cut before sale
100% of sales
Seller paid closing costs or repairs
100% of sales
Year built
2025–2025
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
18 resale sales. Average $1,552,603; median $1,392,500; standard deviation $937,417; middle half (25th–75th percentile) $879,750–$1,968,250; lowest $529,000, highest $4,000,000. 10 sales had a seller payment; their median payment was $12,000.
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
18 resale sales. Average $495; median $443; standard deviation $173; middle half (25th–75th percentile) $413–$532; lowest $219, highest $1,017.
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
18 resale sales. Average 3,023; median 2,916; standard deviation 1,142; middle half (25th–75th percentile) 2,263–3,910; lowest 1,272, highest 4,737.
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
18 resale sales. Average 1968; median 1956; standard deviation 27; middle half (25th–75th percentile) 1950–1975; lowest 1949, highest 2017.
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
18 resale sales. Average 90; median 93; standard deviation 67; middle half (25th–75th percentile) 27–128; lowest 6, highest 201. 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
18 resale sales. Average 9.8%; median 8.7%; standard deviation 10.4%; middle half (25th–75th percentile) 4.4%–14.9%; lowest −10.4%, highest 32.0%. 2 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
9 of 18 resale sales (50.0%).
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
10 of 18 resale sales (55.6%).
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
5 sales with a view, 13 without, 0 unclassified. Most common View entries: None 12, City 4, Downtown 2, Panoramic 2, Skyline 2, Hill Country 1, Trees/Woods 1, Neighborhood 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 “highland park west” (case-insensitive). A record is kept when its subdivision name belongs to the Highland Park West family, the same rule comparable sales use.
The data
Pulled October 26, 2026: 21 closed Highland Park West records over the prior year, in ZIP 78731. 4 subdivision spellings kept: Highland Park West (17); Highland Park West Sec 03 (2); Highland Park West Sec 04 (1); Highland Park West Condo Amd (1). No other names were found by the search.
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 9 resale sales here (under 80), so the full year is used.
Statistically
CloseDate from October 26, 2025 to October 25, 2026 inclusive.
The data
19 single-family sales in the window: 18 resale, 1 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
18 resale; 1 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); 1 sale(s) with no original list price
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 $868K”.
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 $868K: $529,000–$751,000 (4 sales); $868K–$1.15M: $868,000–$1,150,000 (5 sales); $1.64M–$1.98M: $1,635,000–$1,975,000 (5 sales); Over $1.98M: $2,070,000–$4,000,000 (4 sales) Quartiles by living area: Under 2,205 SF: 1,272–1,850 SF (4 sales); 2,205–2,785 SF: 2,205–2,785 SF (5 sales); 3,048–3,934 SF: 3,048–3,934 SF (5 sales); Over 3,934 SF: 4,464–4,737 SF (4 sales) Quartiles by year built: Before 1951: 1949–1950 (6 sales); 1951–1955: 1951–1955 (3 sales); 1957–1979: 1957–1979 (5 sales); After 1979: 2015–2017 (4 sales) View and no view: View: MLS lists a view (5 sales); No view: None or Neighborhood (13 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 $1,552,603, median $1,392,500. Days on market: average 90, median 93: 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
View and no view: 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
0 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
Too few sales in a group to test.
8.3.2 Quartiles by living area
Too few sales in a group to test.
8.3.3 Quartiles by year built
Too few sales in a group to test.
8.3.4 View and no view
Measure
Test
Statistic
df
p-value
Threshold
Real difference?
Effect size
Size
Net sale price
Mann–Whitney U
U = 47.00
—
0.1734
p < 0.0063
Unclear
rank-biserial r = 0.446
medium
Net price per SF
Mann–Whitney U
U = 39.00
—
0.5663
p < 0.0063
Unclear
rank-biserial r = 0.200
small
Living area
Mann–Whitney U
U = 43.00
—
0.3359
p < 0.0063
Unclear
rank-biserial r = 0.323
medium
Year built
Mann–Whitney U
U = 29.50
—
0.8028
p < 0.0063
Unclear
rank-biserial r = 0.092
negligible
Days on market
Mann–Whitney U
U = 33.50
—
0.9607
p < 0.0063
Unclear
rank-biserial r = 0.031
negligible
Discount from original list
Mann–Whitney U
U = 43.00
—
0.3359
p < 0.0063
Unclear
rank-biserial r = 0.323
medium
Price cut before sale
Chi-square
χ² = 0.28
1
0.5987
p < 0.0063
Unclear
Cramér’s V = 0.124
small
Seller paid closing costs or repairs
Chi-square
χ² = 0.68
1
0.4101
p < 0.0063
Unclear
Cramér’s V = 0.194
small
8.4 Data notes
Left out of the analysis: 1 new-construction sales (basic statistics only, section 7); 1 sale(s) other than single-family homes (condo, townhome and similar); 1 sale(s) with no original list price. 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.