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2009 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 132,272,400 0.9453 139,926,373 28 1,400 .009197876
A 130,549,710 0.8145 160,282,026 15 500 .115547823
A 131,016,700 1.0025 130,689,975 15 301 .007107674
A 105,112,980 0.9886 106,325,086 17 146 .020001393
D3 123,373,810 1.0303 119,745,521 26 5,770 .014759747
G1 4,694,070 0.9547 4,916,801 3 5 .010749263
G1 4,761,790 0.9714 4,901,987 2 3 .000042179
L1 3,262,790 0.9788 3,333,459 6 35 .008663539
L1 2,761,670 0.9231 2,991,734 5 11 .025221135
L1 4,855,620 1.0084 4,815,173 3 7 .000304103
Random Totals: 642,661,540   677,928,135 120 8,178  
Catg D1 Exception Values: 14,701,330   11,846,318      
Catg G1 Exception Values: 45,987,365   45,107,531      
Catg L1 Exception Values: 72,839,354   72,123,587      
Total Test Values (4): 776,189,589   807,005,571      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 40,350,279

Confidence Interval Values (5)

State Lower Limit: 766,655,292 (State Test Value minus Margin of Error Percent)
Local Test Value: 776,189,589 (Within Confidence Interval)
State Upper Limit: 847,355,850 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 937,524,635 (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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