taxes Property Tax Assistance

2023 Confidence Interval Detail

Galveston County
084-903/High Island ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 46,344,245 0.9320 49,725,585 12 270 0.107503166
A 29,373,387 1.0978 26,756,592 12 78 0.050579007
A 62,663,218 1.0959 57,179,686 12 117 0.026579060
A 106,923,069 0.9854 108,507,275 12 123 0.021360830
C1 9,763,547 0.3417 28,573,447 16 508 0.605659992
C1 12,179,733 0.4813 25,305,907 12 376 0.424032514
C1 27,568,491 0.7669 35,947,961 13 517 0.146578760
C1 14,636,830 0.7498 19,520,979 12 92 0.119954681
Random Totals: 309,452,520 351,517,432 101 2,081
CATG D1 EXCEPTION VALUES: 73,542 84,949
Total Test Values 309,526,062 351,602,381

Margin of Error

Margin of Error Percent: 6.1455392
Margin of Error Value: 21,607,862

Confidence Interval Values(5)

Local Test Value: 309,526,062 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 329,994,519 (State Test Value minus Margin of Error Percent)
State Upper Limit: 373,210,243 (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