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 0.6090 225,574,460 10 379 0.501858762
F1 140,095,540 0.6650 210,669,985 9 102 0.062333701
F1 139,046,200 0.7106 195,674,360 8 36 0.022193240
F1 137,865,100 0.8785 156,932,385 3 6 0.001827600
L1 66,424,240 0.9399 70,671,603 14 573 0.025712750
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 4,214,588,032 252 17,182
CATG D1 EXCEPTION VALUES: 688,628 641,948
CATG L1 EXCEPTION VALUES: 79,122,610 82,753,701
Total Test Values(2) 3,914,371,837 4,297,983,681

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 214,899,184

Confidence Interval Values(5)

Local Test Value: 3,914,371,837 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 4,083,084,497 (State Test Value minus Margin of Error Percent)
State Upper Limit: 4,512,882,865 (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