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2009 Confidence Interval Detail
028/Caldwell
028-906/Prairie Lea ISD

Category Summary

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

Stratum
Variance
A 3,573,110 0.9373 3,812,131 10 87 .018382350
A 3,890,520 0.9261 4,200,972 7 56 .005368942
A 3,903,492 1.0079 3,872,896 8 38 .023891175
A 4,014,250 0.9838 4,080,352 6 23 .000620049
D3 20,367,620 0.9752 20,885,582 15 775 .015277350
G1 4,825,630 0.9800 4,924,112 5 17 .008366622
G1 5,240,363 1.0873 4,819,611 3 6 .001475833
G1 4,432,660 1.0112 4,383,564 2 3 .000649297
Random Totals: 50,247,645   50,979,220 56 1,005  
Catg J Exception Values: 1,248,395   1,166,196      
Catg D1 Exception Values: 1,406,014   1,391,549      
Catg G1 Exception Values: 4,653,013   4,537,634      
Total Test Values (4): 57,555,067   58,074,599      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 2,903,730

Confidence Interval Values (5)

State Lower Limit: 55,170,869 (State Test Value minus Margin of Error Percent)
Local Test Value: 57,555,067 (Within Confidence Interval)
State Upper Limit: 60,978,329 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 65,647,333 (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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