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2007 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 3,858,629 1.1199 3,445,512 10 349 .038266507
A 3,848,890 0.9359 4,112,501 9 155 .013999628
A 3,829,463 0.9800 3,907,615 10 90 .055046854
A 3,843,940 0.9338 4,116,449 8 55 .011974357
D3 5,175,740 0.9397 5,507,864 19 1,131 .134259183
G1 3,211,496 1.0745 2,988,828 6 26 .036253347
L1 1,118,247 0.9793 1,141,884 6 37 .001011381
L1 1,149,633 1.1279 1,019,269 5 9 .019273142
L1 1,139,418 0.9942 1,146,065 3 4 .000055558
Random Totals: 27,175,456   27,385,987 76 1,856  
Catg D1 Exception Values: 23,506,800   33,214,469      
Catg G1 Exception Values: 4,531,089   4,743,387      
Catg L1 Exception Values: 673,220   665,086      
Total Test Values (4): 55,886,565   66,008,929      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,300,446

Confidence Interval Values (5)

Local Test Value: 55,886,565 (Outside Confidence Interval)
State Lower Limit: 62,708,483 (State Test Value minus Margin of Error Percent)
State Upper Limit: 69,309,375 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 68,768,859 (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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