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2011 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 374,838,278 1.0029 373,754,390 26 4,927 .050612233
A 378,466,000 0.9195 411,599,782 24 3,170 .008230813
A 391,664,545 0.9774 400,720,836 31 2,623 .005814069
A 391,349,210 1.0409 375,971,957 21 1,731 .004583021
F1 84,372,762 1.0120 83,372,294 10 349 .010725714
F1 82,792,270 0.9402 88,058,147 10 89 .008877634
F1 89,379,600 1.0111 88,398,378 8 42 .023887040
F1 73,104,420 1.0539 69,365,613 5 10 .002486290
L1 35,168,478 1.0536 33,379,345 10 543 .007558328
L1 38,402,643 1.0194 37,671,810 10 97 .003164318
L1 42,144,488 1.0052 41,926,470 7 21 .009954255
L1 35,980,119 0.9771 36,823,374 3 4 .001002526
Random Totals: 2,017,662,813   2,041,042,396 165 13,606  
Catg D1 Exception Values: 919,389   1,213,447      
Total Test Values (4): 2,018,582,202   2,042,255,843      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 102,112,792

Confidence Interval Values (5)

State Lower Limit: 1,940,143,051 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,018,582,202 (Within Confidence Interval)
State Upper Limit: 2,144,368,635 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,393,305,955 (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

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