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2009 Confidence Interval Detail
177/Nolan
177-903/Blackwell ISD

Category Summary

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

Stratum
Variance
D3 15,502,343 0.8281 18,720,376 20 1,492 .256216345
G1 14,918,101 1.0324 14,449,923 16 55 .006270376
G1 15,424,110 1.0327 14,935,712 11 18 .019590938
G1 13,275,700 0.9584 13,851,941 5 6 .011580135
Random Totals: 59,120,254   61,957,952 52 1,571  
Catg J Exception Values: 4,199,434   4,234,783      
Catg D1 Exception Values: 10,862,488   12,452,785      
Catg G1 Exception Values: 14,509,680   14,410,368      
Total Test Values (4): 88,691,856   93,055,888      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 4,652,794

Confidence Interval Values (5)

State Lower Limit: 88,403,094 (State Test Value minus Margin of Error Percent)
Local Test Value: 88,691,856 (Within Confidence Interval)
State Upper Limit: 97,708,682 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 411,695,475 (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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