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 0.9691 47,821,943 12 270 0.093334574
A 29,373,387 1.1092 26,481,597 12 78 0.057407785
A 62,663,218 1.0996 56,987,284 12 117 0.028217965
A 106,923,069 0.9906 107,937,683 14 123 0.018972674
C1 9,763,547 0.3706 26,345,243 15 508 0.650154740
C1 12,179,733 0.4939 24,660,322 13 376 0.426715820
C1 27,568,491 0.7674 35,924,539 16 517 0.127811954
C1 14,636,830 0.7498 19,520,979 12 92 0.119954681
Random Totals: 309,452,520 345,679,590 106 2,081
CATG D1 EXCEPTION VALUES: 73,542 84,949
Total Test Values 309,526,062 345,764,539

Margin of Error

Margin of Error Percent: 5.8106432
Margin of Error Value: 20,091,144

Confidence Interval Values(5)

Local Test Value: 309,526,062 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 325,673,395 (State Test Value minus Margin of Error Percent)
State Upper Limit: 365,855,683 (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