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2009 Confidence Interval Detail
184/Parker
184-902/Springtown ISD

Category Summary

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

Stratum
Variance
A 106,869,410 1.0103 105,779,877 27 1,785 .047604230
A 106,743,120 0.9544 111,843,168 31 1,050 .005396515
A 109,626,170 0.9717 112,818,946 38 752 .014210783
A 115,424,660 1.0091 114,383,768 31 534 .003104792
D3 107,079,730 1.0088 106,145,648 24 2,878 .019944258
F1 10,187,530 0.9646 10,561,404 8 86 .000799401
F1 12,003,140 1.0141 11,836,249 10 49 .025336251
F1 11,786,080 0.9496 12,411,626 8 22 .011860478
Random Totals: 579,719,840   585,780,686 177 7,156  
Catg J Exception Values: 15,018,200   15,883,173      
Catg D1 Exception Values: 3,046,160   2,442,222      
Catg F1 Exception Values: 9,517,310   9,882,579      
Total Test Values (4): 607,301,510   613,988,660      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 30,699,433

Confidence Interval Values (5)

State Lower Limit: 583,289,227 (State Test Value minus Margin of Error Percent)
Local Test Value: 607,301,510 (Within Confidence Interval)
State Upper Limit: 644,688,093 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 735,892,080 (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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