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2011 Confidence Interval Detail
080/Franklin
080-901/Mount Vernon ISD

Category Summary

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

Stratum
Variance
A 130,349,090 0.9009 144,687,635 27 1,415 .037617527
A 127,493,520 0.8922 142,897,915 14 516 .046505978
A 131,189,000 0.8472 154,850,094 11 313 .071201134
A 135,285,700 0.8936 151,394,024 10 193 .031314334
D3 128,920,220 0.9328 138,207,783 15 5,766 .056321695
G1 22,067,151 1.0058 21,939,900 8 42 .006669650
L1 11,575,670 1.2394 9,339,737 9 35 .227843564
Random Totals: 686,880,351   763,317,088 94 8,280  
Catg D1 Exception Values: 14,684,100   11,047,113      
Catg G1 Exception Values: 12,472,685   12,131,046      
Catg L1 Exception Values: 61,285,170   61,285,167      
Total Test Values (4): 775,322,306   847,780,414      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 42,389,021

Confidence Interval Values (5)

Local Test Value: 775,322,306 (Outside Confidence Interval)
State Lower Limit: 805,391,393 (State Test Value minus Margin of Error Percent)
State Upper Limit: 890,169,435 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 875,718,270 (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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