taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
084/Galveston
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 332,614,912 0.9069 366,760,296 64 4,223 .042739150
A 340,584,400 0.9612 354,332,501 74 2,750 .010452876
A 556,505,655 0.9645 576,988,756 74 3,542 .009478149
A 787,598,601 0.9781 805,233,208 60 3,312 .021787703
F1 121,263,740 0.8596 141,069,963 10 367 .339501667
F1 115,612,723 0.9649 119,818,347 11 86 .019189809
F1 122,713,570 0.9577 128,133,622 8 31 .030072206
L1 47,833,299 1.0147 47,140,336 9 426 .005691852
L1 43,676,122 1.0054 43,441,538 9 97 .004143536
L1 48,495,297 0.9970 48,641,221 7 31 .003416639
L1 64,067,098 0.9716 65,939,788 5 10 .001447216
Random Totals: 2,580,965,417   2,697,499,576 331 14,875  
Catg D1 Exception Values: 674,173   585,229      
Catg F1 Exception Values: 116,501,770   108,676,932      
Catg L1 Exception Values: 72,967,866   72,967,866      
Total Test Values (4): 2,771,109,226   2,879,729,603      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 143,986,480

Confidence Interval Values (5)

State Lower Limit: 2,735,743,123 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,771,109,226 (Within Confidence Interval)
State Upper Limit: 3,023,716,083 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,085,034,504 (See ISD Summary Worksheet)

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, D3, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values
(6) Includes local value of unstudied property categories and sub-categories