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2006 Confidence Interval Detail
170/Montgomery
170-903/Montgomery ISD

Category Summary

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

Stratum
Variance
A 516,690,715 0.9435 547,631,918 24 5,128 .004689136
A 516,587,319 0.9373 551,144,051 27 2,490 .004173762
A 516,793,182 0.9791 527,824,719 29 1,524 .014295108
A 516,192,928 0.9364 551,252,593 19 783 .007832277
C 50,972,202 0.9332 54,620,877 8 4,967 .011585596
C 48,752,016 0.9664 50,447,036 7 1,309 .004853792
C 47,586,264 1.0086 47,180,512 10 564 .006175244
C 48,857,708 0.9856 49,571,538 9 266 .009424826
Random Totals: 2,262,432,334   2,379,673,244 133 17,031  
Catg D1 Exception Values: 13,640,520   12,507,458      
Total Test Values (4): 2,276,072,854   2,392,180,702      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 119,609,035

Confidence Interval Values (5)

State Lower Limit: 2,272,571,667 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,276,072,854 (Within Confidence Interval)
State Upper Limit: 2,511,789,737 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,434,389,529 (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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