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2007 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 31,189,459 0.9288 33,580,382 19 571 .043255739
A 31,081,703 1.0358 30,007,437 16 385 .047887736
A 31,151,035 0.9555 32,601,816 16 306 .023052373
A 31,058,945 1.0048 30,910,574 38 206 .016851272
C 5,977,960 0.9400 6,359,532 9 447 .114666000
C 3,833,654 0.9106 4,210,031 11 238 .031098993
C 6,388,462 1.0584 6,035,962 11 265 .071692730
C 3,276,737 1.0557 3,103,852 10 92 .149814616
D3 18,024,110 1.0239 17,603,389 22 513 .176017178
G1 54,132,273 1.0074 53,734,637 17 33 .004099429
Random Totals: 216,114,338   218,147,612 169 3,056  
Catg J Exception Values: 7,121,271   7,023,775      
Catg D1 Exception Values: 1,571,398   2,144,549      
Total Test Values (4): 224,807,007   227,315,936      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 11,365,797

Confidence Interval Values (5)

State Lower Limit: 215,950,139 (State Test Value minus Margin of Error Percent)
Local Test Value: 224,807,007 (Within Confidence Interval)
State Upper Limit: 238,681,733 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 253,646,875 (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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