taxes Property Tax Assistance

2020 Confidence Interval Detail

Williamson County
246-914/Coupland ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 7,873,937 0.7292 10,798,049 8 99 0.059222346
A 8,303,500 0.9592 8,656,693 10 59 0.101379008
A 8,229,901 1.0075 8,168,636 8 39 0.037287279
A 9,167,700 1.0302 8,898,952 7 24 0.031295105
E 58,109,963 0.9983 58,208,918 25 453 0.034865613
Random Totals: 91,685,001 94,731,248 58 674
CATG D1 EXCEPTION VALUES: 3,279,637 3,953,320
CATG J EXCEPTION VALUES: 4,180,311 4,709,215
Total Test Values 99,144,949 103,393,783

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 5,169,689

Confidence Interval Values(5)

Local Test Value: 99,144,949 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 98,224,094 (State Test Value minus Margin of Error Percent)
State Upper Limit: 108,563,472 (State Test Value plus Margin of Error Percent)

Sources:
(1) See Stratified Category Worksheet Reports PTS236, PTS430
(2) Number of parcels sampled by staff
(3) Total Category Parcels from Stratification Report, Appraisal Roll, or Self-report
(4) Includes any parcels in A, B, C, D2, E, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values