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2011 Confidence Interval Detail
050/Coryell
050-904/Oglesby ISD

Category Summary

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

Stratum
Variance
A 4,122,180 1.0585 3,894,360 10 111 .034377673
A 4,319,180 0.9591 4,503,368 10 75 .018529970
A 4,562,730 0.9248 4,933,748 10 50 .020255702
A 4,211,830 0.9597 4,388,694 10 26 .055925066
D3 15,633,190 0.9623 16,245,651 21 775 .028750612
Random Totals: 32,849,110   33,965,821 61 1,037  
Catg J Exception Values: 386,657   347,860      
Catg D1 Exception Values: 4,164,719   4,616,880      
Total Test Values (4): 37,400,486   38,930,561      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,946,528

Confidence Interval Values (5)

State Lower Limit: 36,984,033 (State Test Value minus Margin of Error Percent)
Local Test Value: 37,400,486 (Within Confidence Interval)
State Upper Limit: 40,877,089 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 34,297,575 (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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