taxes Property Tax Assistance

2018 Confidence Interval Detail

020/Brazoria
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 1,336,766,754 0.9393 1,423,152,086 50 9332 0.009106652
A 1,447,574,112 0.9704 1,491,729,299 50 6632 0.010957266
A 1,523,549,568 0.9728 1,566,148,816 50 5389 0.007326473
A 1,595,629,183 1.0038 1,589,588,746 50 4018 0.007337782
B 552,152,109 0.8060 662,688,561 9 33 0.015095025
E 397,895,917 0.9729 408,979,255 16 3301 0.019875611
F1 590,824,527 0.8990 654,073,427 9 689 0.051850945
F1 565,869,586 0.8076 588,099,757 8 54 0.026268716
L1 204,590,460 0.7793 238,645,118 16 959 0.063237019
L1 102,773,230 0.9501 108,170,961 8 37 0.015090182
L1 91,471,890 0.9159 99,871,045 7 10 0.011412516
Random Totals: 8,409,097,336 8,831,147,071 273 30,454
CATG D1 EXCEPTION VALUES: 14,442,852 13,730,983
Total Test Values(1) 8,423,540,188 8,844,878,054

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 442,243,903

Confidence Interval Values(5)

Local Test Value: 8,423,540,188 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 8,402,634,151 (State Test Value minus Margin of Error Percent)
State Upper Limit: 9,287,121,957 (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