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2006 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 3,689,745 0.9713 3,798,770 15 124 .003369124
A 3,725,789 0.9509 3,918,171 14 80 .010730313
A 3,711,417 0.9304 3,989,055 13 52 .013468115
A 3,596,180 0.9396 3,827,352 11 29 .009860936
D3 11,788,013 0.9642 12,225,693 24 775 .015135129
Random Totals: 26,511,144   27,759,041 77 1,060  
Catg J Exception Values: 1,403,994   1,759,813      
Catg D1 Exception Values: 4,297,850   4,092,411      
Total Test Values (4): 32,212,988   33,611,265      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,680,563

Confidence Interval Values (5)

State Lower Limit: 31,930,702 (State Test Value minus Margin of Error Percent)
Local Test Value: 32,212,988 (Within Confidence Interval)
State Upper Limit: 35,291,828 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 28,529,157 (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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