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2008 Confidence Interval Detail
169/Montague
169-909/Prairie Valley ISD

Category Summary

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

Stratum
Variance
A 4,367,500 0.9886 4,417,864 7 114 .035000948
A 4,261,800 1.0481 4,066,215 10 60 .031755416
A 5,288,860 1.1624 4,549,948 8 41 .008845839
A 6,541,940 1.1333 5,772,470 9 26 .004908157
D3 14,274,070 1.2150 11,748,206 16 773 .118415525
G1 18,200,820 1.0610 17,154,402 6 37 .006947426
G1 18,154,000 1.0226 17,752,787 5 13 .025255336
G1 19,033,360 0.9993 19,046,693 3 5 .006632179
Random Totals: 90,122,350   84,508,585 64 1,069  
Catg D1 Exception Values: 4,783,320   4,181,052      
Catg G1 Exception Values: 38,015,330   37,845,342      
Total Test Values (4): 132,921,000   126,534,979      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 6,326,749

Confidence Interval Values (5)

State Lower Limit: 120,208,230 (State Test Value minus Margin of Error Percent)
State Upper Limit: 132,861,728 (State Test Value plus Margin of Error Percent)
Local Test Value: 132,921,000 (Outside Confidence Interval)
Value Assigned (6): 138,376,127 (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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