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2007 Confidence Interval Detail
251/Yoakum
251-902/Plains ISD

Category Summary

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

Stratum
Variance
D3 13,579,556 1.0621 12,785,572 18 2,101 .086940086
G1 183,164,639 0.9458 193,661,069 7 48 .067065214
G1 155,666,347 1.0170 153,064,255 2 4 .054348055
Random Totals: 352,410,542   359,510,896 27 2,153  
Catg D1 Exception Values: 45,742,666   64,882,536      
Total Test Values (4): 398,153,208   424,393,432      

Margin of Error

Margin of Error Percent: 12.1455921
Margin of Error Value: 51,545,095

Confidence Interval Values (5)

State Lower Limit: 372,848,337 (State Test Value minus Margin of Error Percent)
Local Test Value: 398,153,208 (Within Confidence Interval)
State Upper Limit: 475,938,527 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 790,115,097 (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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