taxes Property Tax Assistance

2025 Confidence Interval Detail

Galveston County
084-902/Galveston ISD

Category Summary

(1)
Category 		(1)
Stratum
Number 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 2 3,784,473,478 1.0177 3,718,653,314 199 11,754 8,513,042,759
A 3 3,132,848,233 1.0232 3,061,814,145 198 6,202 11,883,462,352
A 4 2,921,301,470 0.9931 2,941,598,500 150 3,964 34,827,148,181
A 5 3,083,386,123 1.0133 3,042,915,349 83 2,247 394,719,074,479
B 2 257,311,390 1.0085 255,142,677 15 647 20,211,262,365
B 3 221,379,383 1.0885 203,380,232 12 162 3,582,835,661,157
B 4 270,689,793 0.7356 367,985,037 8 22 18,632,710,791,324
C1 2 191,959,197 0.8920 215,200,893 62 3,240 1,612,340,162
C1 3 259,823,349 1.0427 249,183,225 42 1,980 3,435,904,767
C1 4 223,383,659 0.9032 247,324,689 19 807 8,529,729,609
C1 5 220,722,923 0.9936 222,144,649 12 264 91,461,202,697
F1 2 443,881,356 0.8303 534,603,584 14 670 203,869,525,090
F1 3 459,472,879 0.7812 588,162,928 13 236 1,992,689,053,848
F1 4 419,859,053 0.7427 565,314,465 9 82 15,928,902,008,002
F1 5 369,972,687 0.7312 505,980,152 8 22 49,189,239,139,595
L1 2 76,994,437 1.0185 75,595,913 10 1,272 7,764,549,091
L1 3 81,457,689 0.9688 84,081,017 10 167 73,756,145,655
L1 4 101,084,012 0.9699 104,221,066 8 36 799,857,293,248
L1 5 47,078,480 0.9725 48,409,748 3 5 15,013,337,138,591
Random Totals: 16,567,079,591 17,031,711,583 875 33,779
CATG B EXCEPTION VALUES: 166,166,368 175,361,449
CATG D1 EXCEPTION VALUES: 393,722 453,510
Total Test Values 16,733,639,681 17,207,526,542

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 860,376,327

Confidence Interval Values(5)

Local Test Value: 16,733,639,681 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 16,347,150,215 (State Test Value minus Margin of Error Percent)
State Upper Limit: 18,067,902,869 (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