taxes Property Tax Assistance

2023 Confidence Interval Detail

Galveston County
084-902/Galveston ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 2,220,720,390 0.9436 2,353,455,267 129 8,842 0.019766467
A 2,946,842,594 0.9656 3,051,825,387 132 7,378 0.021358505
A 3,903,817,019 0.9980 3,911,640,300 136 6,525 0.010240579
A 3,986,083,491 0.9832 4,054,193,949 139 3,464 0.014797367
B 188,903,962 0.8842 213,643,929 21 635 0.111686233
B 228,823,781 0.9000 254,248,646 11 192 0.025891013
B 225,751,639 0.9814 230,030,201 6 15 0.005343030
B 163,179,780 1.0062 162,174,299 4 5 0.001986720
C1 131,299,696 0.3433 382,463,431 64 3,755 0.221973345
C1 159,036,133 0.5171 307,553,922 51 1,795 0.365911171
C1 148,924,115 0.6504 228,973,117 15 667 0.162579466
C1 136,003,822 0.8535 159,348,356 10 151 0.116644914
F1 344,552,851 0.9016 382,157,111 12 644 0.046156569
F1 481,867,086 0.7439 647,757,879 13 252 0.183396435
F1 349,647,882 0.9004 388,325,058 13 48 0.024890144
F1 321,604,441 0.8350 385,155,019 8 10 0.021475125
L1 55,616,924 0.9367 59,375,386 10 690 0.009552260
L1 74,437,610 0.9013 82,589,160 10 171 0.018845320
L1 71,052,690 0.9108 78,011,298 8 28 0.030985688
L1 89,420,220 0.9162 97,599,018 5 8 0.015329119
Random Totals: 16,227,586,126 17,430,520,733 797 35,275
CATG D1 EXCEPTION VALUES: 303,725 346,392
Total Test Values 16,227,889,851 17,430,867,125

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 871,543,356

Confidence Interval Values(5)

Local Test Value: 16,227,889,851 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 16,559,323,769 (State Test Value minus Margin of Error Percent)
State Upper Limit: 18,302,410,481 (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