taxes Property Tax Assistance

2023 Confidence Interval Detail

Galveston County
084-906/Texas City ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 732,102,335 0.9500 770,634,037 61 5,413 0.028176214
A 1,047,786,690 1.0046 1,042,988,941 82 5,537 0.017920080
A 1,117,882,193 0.9967 1,121,583,418 70 4,051 0.009585131
A 1,188,467,134 0.9708 1,224,214,188 72 2,106 0.013536923
B 92,278,980 0.6762 136,466,992 11 202 0.325515864
B 68,508,670 0.8474 80,845,728 7 10 0.019522167
B 87,758,770 1.0943 80,193,585 6 9 0.018266177
F1 140,539,935 0.7146 196,669,374 12 524 0.117584836
F1 151,569,908 0.8831 171,633,912 12 185 0.170882182
F1 125,620,430 0.8828 142,297,723 12 62 0.078522537
F1 171,742,646 1.0143 169,321,351 9 25 0.030884256
Random Totals: 4,924,257,691 5,136,849,249 354 18,124
CATG B EXCEPTION VALUES: 48,274,850 43,680,677
CATG D1 EXCEPTION VALUES: 102,321 114,861
CATG J EXCEPTION VALUES: 48,775,979 50,025,459
Total Test Values 5,021,410,841 5,230,670,246

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 261,533,512

Confidence Interval Values(5)

Local Test Value: 5,021,410,841 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 4,969,136,734 (State Test Value minus Margin of Error Percent)
State Upper Limit: 5,492,203,758 (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