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2010 Confidence Interval Detail
054/Crosby
054-903/Ralls ISD

Category Summary

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

Stratum
Variance
A 7,945,960 0.9720 8,174,856 10 316 .030009249
A 8,162,190 1.0268 7,949,153 9 171 .016112092
A 8,785,860 1.0113 8,687,689 10 116 .011747499
A 9,648,440 1.1283 8,551,307 8 66 .027205620
D3 5,355,770 0.9887 5,416,982 15 1,354 .164775694
G1 5,237,425 1.0727 4,882,469 8 21 .005564549
Random Totals: 45,135,645   43,662,456 60 2,044  
Catg J Exception Values: 2,349,565   2,029,969      
Catg D1 Exception Values: 32,966,120   38,123,729      
Catg G1 Exception Values: 25,967,607   25,046,731      
Total Test Values (4): 106,418,937   108,862,885      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 5,443,144

Confidence Interval Values (5)

State Lower Limit: 103,419,741 (State Test Value minus Margin of Error Percent)
Local Test Value: 106,418,937 (Within Confidence Interval)
State Upper Limit: 114,306,029 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 112,812,144 (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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