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2012 Confidence Interval Detail
125/Jim Wells
125-905/Premont ISD

Category Summary

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

Stratum
Variance
A 9,364,106 0.9805 9,550,338 10 335 .008942270
A 9,220,527 0.9159 10,067,177 10 196 .007449107
A 9,254,962 1.0106 9,157,888 9 139 .006063585
A 9,210,313 0.9889 9,313,695 9 83 .010784853
D3 21,204,177 0.9887 21,446,523 15 1,295 .015800815
G1 1,808,271 1.0147 1,782,075 6 15 .022099973
G1 1,623,921 1.0141 1,601,342 2 3 .011635928
Random Totals: 61,686,277   62,919,038 61 2,066  
Catg J Exception Values: 2,712,970   2,901,187      
Catg D1 Exception Values: 8,893,032   9,605,546      
Catg G1 Exception Values: 2,651,690   2,666,250      
Total Test Values (4): 75,943,969   78,092,021      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,904,601

Confidence Interval Values (5)

State Lower Limit: 74,187,420 (State Test Value minus Margin of Error Percent)
Local Test Value: 75,943,969 (Within Confidence Interval)
State Upper Limit: 81,996,622 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 128,608,033 (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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