taxes Property Tax Assistance

2019 Confidence Interval Detail

Galveston County
084-901/Dickinson ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 434,506,553 0.8982 483,752,564 42 4025 0.008601661
A 723,946,157 0.9313 777,350,110 51 4416 0.002389790
A 982,537,108 0.9642 1,019,017,951 49 4643 0.006414100
A 940,970,625 0.9979 942,950,822 50 2915 0.009908366
F1 137,374,846 0.4806 285,840,295 10 379 0.230729215
F1 140,095,540 0.3866 362,378,531 9 102 0.257354058
F1 139,046,200 0.5335 260,630,178 8 36 0.107190467
F1 137,865,100 0.7826 176,162,918 3 6 0.000559835
L1 66,424,240 0.9352 71,026,775 14 573 0.025877084
L1 58,662,780 1.0989 53,383,183 10 72 0.044053897
L1 73,131,450 0.9303 78,610,609 6 15 0.003014306
Random Totals: 3,834,560,599 4,511,103,936 252 17,182
CATG D1 EXCEPTION VALUES: 447,510 412,839
CATG L1 EXCEPTION VALUES: 79,122,610 83,481,943
Total Test Values(2) 3,914,130,719 4,594,998,718

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 229,749,936

Confidence Interval Values(5)

Local Test Value: 3,914,130,719 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 4,365,248,782 (State Test Value minus Margin of Error Percent)
State Upper Limit: 4,824,748,654 (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