Veteran's Day

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2007 Confidence Interval Detail
091/Grayson
091-918/Tom Bean ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 22,986,466 0.9156 25,105,358 19 381 .031919548
A 22,971,854 0.9410 24,412,172 16 238 .015806663
A 22,908,150 0.9451 24,238,864 15 172 .006473912
A 22,861,297 0.9764 23,413,864 15 115 .012603981
D3 40,787,723 0.9474 43,052,273 23 1,474 .063777071
Random Totals: 132,515,490   140,222,531 88 2,380  
Catg D1 Exception Values: 4,020,070   2,904,087      
Total Test Values (4): 136,535,560   143,126,618      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 7,156,331

Confidence Interval Values (5)

State Lower Limit: 135,970,287 (State Test Value minus Margin of Error Percent)
Local Test Value: 136,535,560 (Within Confidence Interval)
State Upper Limit: 150,282,949 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 131,647,708 (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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