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2008 Confidence Interval Detail
050/Coryell
050-909/Jonesboro ISD

Category Summary

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

Stratum
Variance
A 5,216,500 0.9950 5,242,714 8 118 .002612493
A 5,789,565 0.9425 6,142,775 6 79 .012679346
A 5,797,590 1.0095 5,743,031 6 54 .002606681
A 7,541,290 0.9972 7,562,465 6 39 .009871170
D3 5,883,185 0.9832 5,983,711 23 948 .013438446
Random Totals: 30,228,130   30,674,696 49 1,238  
Catg J Exception Values: 1,851,730   1,937,891      
Catg D1 Exception Values: 5,726,989   5,251,689      
Total Test Values (4): 37,806,849   37,864,276      

Margin of Error

Margin of Error Percent: 5.0000005
Margin of Error Value: 1,893,214

Confidence Interval Values (5)

State Lower Limit: 35,971,062 (State Test Value minus Margin of Error Percent)
Local Test Value: 37,806,849 (Within Confidence Interval)
State Upper Limit: 39,757,490 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 33,393,085 (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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