taxes Property Tax Assistance

2021 Confidence Interval Detail

Galveston County
084-902/Galveston ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 1,495,981,665 0.9936 1,505,617,618 100 8,655 0.029852794
A 2,169,817,060 0.9771 2,220,670,412 98 7,723 0.018998832
A 2,576,917,730 0.9904 2,601,895,931 91 5,959 0.023174573
A 2,641,974,220 0.9971 2,649,658,229 100 2,991 0.010845705
B 159,647,520 0.9453 168,885,560 11 713 0.077967223
B 157,007,320 0.9102 172,497,605 11 223 0.004704008
B 95,477,370 0.8733 109,329,406 7 12 0.078991319
B 183,729,138 0.9222 199,229,167 5 11 0.008777665
C1 106,654,776 0.7527 141,696,261 59 3,810 0.071515041
C1 129,600,486 0.8549 151,597,246 60 2,016 0.062843764
C1 112,891,657 0.9133 123,608,515 52 764 0.069956823
C1 147,799,102 0.9101 162,398,750 27 349 0.029182571
F1 275,852,647 0.9118 302,536,353 16 793 0.045020986
F1 386,652,110 0.9205 420,045,747 17 297 0.139923257
F1 253,698,924 1.1670 217,394,108 16 48 0.142736092
F1 251,638,644 1.0035 250,760,981 8 16 0.189527369
L1 60,054,717 0.9014 66,623,826 10 735 0.037074413
L1 59,037,125 1.0195 57,907,921 10 125 0.016290818
L1 89,097,420 0.9707 91,786,772 10 26 0.011813051
Random Totals: 11,353,529,631 11,614,140,408 708 35,266
CATG D1 EXCEPTION VALUES: 300,100 262,692
CATG L1 EXCEPTION VALUES: 10,344,410 11,914,761
Total Test Values 11,364,174,141 11,626,317,861

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 581,315,893

Confidence Interval Values(5)

Local Test Value: 11,364,174,141 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 11,045,001,968 (State Test Value minus Margin of Error Percent)
State Upper Limit: 12,207,633,754 (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