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2008 Confidence Interval Detail
126/Johnson
126-908/Venus ISD

Category Summary

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

Stratum
Variance
A 32,431,968 0.9877 32,835,849 19 641 .046082580
A 30,302,158 0.9807 30,898,499 15 409 .007881104
A 33,668,258 0.9616 35,012,748 15 340 .003362397
A 43,257,731 1.0123 42,732,126 25 288 .009148457
C 5,318,435 0.5843 9,102,233 11 408 .013601889
C 3,625,048 0.8201 4,420,251 11 234 .055924586
C 5,532,706 0.9169 6,034,143 9 240 .035135813
C 3,707,898 0.9609 3,858,776 8 106 .048088607
D3 17,211,087 0.9859 17,457,234 27 514 .075517515
G1 25,452,451 1.0054 25,315,746 5 23 .000772018
G1 27,008,938 1.0197 26,487,141 5 13 .004478683
G1 23,802,033 1.0115 23,531,422 5 8 .000301987
G1 23,896,998 1.0263 23,284,613 3 5 .001519818
Random Totals: 275,215,709   280,970,781 158 3,229  
Catg J Exception Values: 9,545,574   9,792,734      
Catg D1 Exception Values: 1,624,235   2,284,913      
Total Test Values (4): 286,385,518   293,048,428      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 14,652,421

Confidence Interval Values (5)

State Lower Limit: 278,396,007 (State Test Value minus Margin of Error Percent)
Local Test Value: 286,385,518 (Within Confidence Interval)
State Upper Limit: 307,700,849 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 338,836,360 (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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