taxes Property Tax Assistance

2025 Confidence Interval Detail

Galveston County
084-906/Texas City 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 1,053,794,172 1.0452 1,008,222,514 97 6,529 1,379,974,133
A 3 1,171,316,237 1.0619 1,103,038,174 100 5,234 1,844,676,829
A 4 1,022,351,109 1.0594 965,028,421 97 3,200 4,899,443,851
A 5 1,059,240,288 1.0021 1,057,020,545 49 1,693 216,472,473,636
B 2 83,893,178 0.9540 87,938,342 13 196 69,461,661,999
B 3 78,750,000 0.7902 99,658,314 6 12 14,934,799,940,243
B 4 76,901,000 0.8694 88,452,956 5 6 17,852,005,329,379
B 5 70,725,000 0.7439 95,073,263 3 4 28,752,696,773,124
F1 2 148,315,148 0.6853 216,423,680 11 464 51,653,841,913
F1 3 169,027,643 0.7324 230,785,968 10 188 146,521,510,741
F1 4 151,194,863 0.6677 226,441,310 10 65 9,963,900,317,683
F1 5 138,922,100 0.8350 166,373,772 7 18 28,128,729,368,933
Random Totals: 5,224,430,738 5,344,457,259 408 17,609
CATG D1 EXCEPTION VALUES: 123,820 141,541
CATG J EXCEPTION VALUES: 175,801,814 181,871,486
Total Test Values 5,400,356,372 5,526,470,286

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 276,323,514

Confidence Interval Values(5)

Local Test Value: 5,400,356,372 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 5,250,146,772 (State Test Value minus Margin of Error Percent)
State Upper Limit: 5,802,793,800 (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