taxes Property Tax Assistance

2023 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 2,220,720,390 0.9776 2,271,604,327 128 8,842 0.018459558
A 2,946,842,594 0.9970 2,955,709,723 132 7,378 0.020805518
A 3,903,817,019 1.0293 3,792,691,168 136 6,525 0.009858678
A 3,986,083,491 1.0151 3,926,788,977 139 3,464 0.014287165
B 188,903,962 0.8853 213,378,473 21 635 0.112124867
B 228,823,781 1.0382 220,404,335 11 192 0.020254201
B 225,751,639 1.0286 219,474,664 6 15 0.016827711
B 163,179,780 1.0475 155,780,220 4 5 0.000805020
C1 131,299,696 0.3533 371,637,973 69 3,755 0.233021928
C1 159,036,133 0.5502 289,051,496 57 1,795 0.385829118
C1 148,924,115 0.6938 214,649,921 18 667 0.163671795
C1 136,003,822 0.9140 148,800,681 11 151 0.164931208
F1 344,552,851 0.9072 379,798,116 12 644 0.043783135
F1 481,867,086 0.7741 622,486,870 13 252 0.132048235
F1 349,647,882 0.9326 374,917,309 12 48 0.025821912
F1 321,604,441 0.8529 377,071,686 9 10 0.025696458
L1 55,616,924 0.9367 59,375,386 10 690 0.009552260
L1 74,437,610 0.9013 82,589,160 10 171 0.018845320
L1 71,052,690 0.9108 78,011,298 8 28 0.030985688
L1 89,420,220 0.9162 97,599,018 5 8 0.015329119
Random Totals: 16,227,586,126 16,851,820,801 811 35,275
CATG D1 EXCEPTION VALUES: 342,116 384,802
Total Test Values 16,227,928,242 16,852,205,603

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 842,610,280

Confidence Interval Values(5)

Local Test Value: 16,227,928,242 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 16,009,595,323 (State Test Value minus Margin of Error Percent)
State Upper Limit: 17,694,815,883 (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