taxes Property Tax Assistance

2018 Confidence Interval Detail

113/Houston
113-902/Grapeland ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 19,871,840 0.8154 24,370,665 13 419 0.035114006
A 19,802,360 0.8597 23,034,035 13 236 0.047065964
A 20,279,830 0.8623 23,518,300 13 151 0.030555421
A 21,368,480 0.8215 26,011,540 13 80 0.061758131
E 88,228,730 0.7446 118,491,445 18 1788 0.106627637
Random Totals: 169,551,240 215,425,985 70 2,674
CATG D1 EXCEPTION VALUES: 16,981,760 17,471,654
CATG J EXCEPTION VALUES: 5,838,916 6,189,883
Total Test Values(2) 192,371,916 239,087,522

Margin of Error

Margin of Error Percent: 7.8974518
Margin of Error Value: 18,881,822

Confidence Interval Values(5)

Local Test Value: 192,371,916 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 220,205,700 (State Test Value minus Margin of Error Percent)
State Upper Limit: 257,969,344 (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