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2008 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 3,846,800 0.9950 3,866,131 8 106 .036028950
A 4,504,200 0.9668 4,658,875 6 79 .004614460
A 4,561,920 0.9630 4,737,196 7 49 .004344808
A 4,622,380 0.9822 4,706,149 6 28 .003235994
D3 12,547,430 1.0153 12,358,347 23 756 .028017971
L1 2,647,680 0.9864 2,684,185 15 38 .010982412
Random Totals: 32,730,410   33,010,883 65 1,056  
Catg J Exception Values: 1,416,101   1,468,337      
Catg D1 Exception Values: 4,222,692   3,985,793      
Total Test Values (4): 38,369,203   38,465,013      

Margin of Error

Margin of Error Percent: 5.0000009
Margin of Error Value: 1,923,251

Confidence Interval Values (5)

State Lower Limit: 36,541,762 (State Test Value minus Margin of Error Percent)
Local Test Value: 38,369,203 (Within Confidence Interval)
State Upper Limit: 40,388,264 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 32,444,136 (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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