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2009 Confidence Interval Detail
040/Cochran
040-901/Morton ISD

Category Summary

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

Stratum
Variance
A 3,778,700 0.9575 3,946,423 7 331 .002110518
A 4,066,700 0.9301 4,372,326 7 162 .051195169
A 3,936,930 0.9316 4,225,988 8 91 .013231282
A 5,129,150 0.9915 5,173,122 6 72 .003707924
D3 6,305,460 0.9551 6,601,885 13 1,181 .002391234
G1 3,887,902 1.0749 3,616,989 6 25 .004265254
L1 1,117,040 1.0345 1,079,787 6 40 .011740283
L1 725,830 1.0417 696,775 4 7 .010685651
L1 1,066,950 0.9746 1,094,757 3 6 .004558540
L1 1,285,430 1.0060 1,277,763 2 4 .000143931
Random Totals: 31,300,092   32,085,815 62 1,919  
Catg D1 Exception Values: 25,612,160   26,211,256      
Catg G1 Exception Values: 5,804,286   5,370,731      
Total Test Values (4): 62,716,538   63,667,802      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,183,390

Confidence Interval Values (5)

State Lower Limit: 60,484,412 (State Test Value minus Margin of Error Percent)
Local Test Value: 62,716,538 (Within Confidence Interval)
State Upper Limit: 66,851,192 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 65,451,038 (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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