taxes Property Tax Assistance

2022 Confidence Interval Detail

Brazoria County
020-901/Alvin ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 1,413,202,766 0.9008 1,568,830,779 148 7,796 0.018052405
A 1,872,883,653 0.9436 1,984,827,949 152 7,237 0.011613525
A 2,555,867,461 0.9454 2,703,477,323 150 7,942 0.008810072
A 4,766,328,085 0.9500 5,017,187,458 144 10,502 0.010816880
B 781,078,812 1.0540 741,061,491 9 32 0.016953336
E 582,369,556 0.8633 674,585,377 25 2,861 0.059654187
F1 364,105,179 0.8191 444,518,592 17 629 0.077727281
F1 442,394,651 0.8785 503,579,569 11 224 0.074357979
F1 436,850,415 0.6425 679,922,825 15 76 0.399451820
F1 482,922,578 0.8325 580,087,181 6 20 0.006011356
L1 107,994,110 0.8932 120,906,975 10 968 0.031398939
L1 116,641,500 0.9020 129,314,302 10 160 0.023902435
L1 110,487,950 0.9644 114,566,518 8 41 0.002567673
L1 111,091,520 0.9445 117,619,397 7 15 0.004960339
Random Totals: 14,144,218,236 15,380,485,736 712 38,503
CATG D1 EXCEPTION VALUES: 14,613,859 12,764,229
CATG J EXCEPTION VALUES: 142,916,300 163,387,370
Total Test Values 14,301,748,395 15,556,637,335

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 777,831,867

Confidence Interval Values(5)

Local Test Value: 14,301,748,395 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 14,778,805,468 (State Test Value minus Margin of Error Percent)
State Upper Limit: 16,334,469,202 (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