taxes Property Tax Assistance

2020 Confidence Interval Detail

Williamson County
246-905/Granger ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 21,227,625 1.1131 19,070,726 17 265 0.050442766
A 21,014,674 1.0088 20,831,358 19 153 0.013616637
A 21,998,627 0.9540 23,059,357 17 109 0.017345264
A 17,733,749 1.0009 17,717,803 15 50 0.027849359
E 75,072,995 0.9520 78,858,188 19 622 0.021625914
Random Totals: 157,047,670 159,537,432 87 1,199
CATG D1 EXCEPTION VALUES: 8,622,837 13,882,720
CATG J EXCEPTION VALUES: 10,501,476 11,351,293
Total Test Values 176,171,983 184,771,445

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 9,238,572

Confidence Interval Values(5)

Local Test Value: 176,171,983 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 175,532,873 (State Test Value minus Margin of Error Percent)
State Upper Limit: 194,010,017 (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