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2012 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 21,492,330 0.9766 22,007,301 16 1,426 .035800194
G1 26,638,790 0.9875 26,975,990 8 52 .026480185
G1 26,609,050 0.9925 26,810,126 7 14 .013673528
G1 32,464,627 1.0063 32,261,380 4 5 .005700077
Random Totals: 107,204,797   108,054,797 35 1,497  
Catg J Exception Values: 30,512,050   31,270,835      
Catg D1 Exception Values: 13,156,070   14,197,733      
Catg G1 Exception Values: 19,267,880   19,856,306      
Total Test Values (4): 170,140,797   173,379,671      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 8,668,984

Confidence Interval Values (5)

State Lower Limit: 164,710,687 (State Test Value minus Margin of Error Percent)
Local Test Value: 170,140,797 (Within Confidence Interval)
State Upper Limit: 182,048,655 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 229,691,044 (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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