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2008 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 11,682,638 0.6896 16,941,180 22 1,267 .464302149
G1 21,626,420 0.9463 22,853,662 7 55 .012127903
G1 23,380,470 0.9841 23,758,226 6 15 .020143127
G1 21,321,040 0.9941 21,447,581 3 6 .015080569
Random Totals: 78,010,568   85,000,649 38 1,343  
Catg J Exception Values: 7,048,210   4,467,368      
Catg D1 Exception Values: 9,415,220   11,173,322      
Catg G1 Exception Values: 18,828,950   18,189,176      
Total Test Values (4): 113,302,948   118,830,515      

Margin of Error

Margin of Error Percent: 5.1348157
Margin of Error Value: 6,101,728

Confidence Interval Values (5)

State Lower Limit: 112,728,787 (State Test Value minus Margin of Error Percent)
Local Test Value: 113,302,948 (Within Confidence Interval)
State Upper Limit: 124,932,243 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 672,177,975 (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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