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2009 Confidence Interval Detail
250/Wood
230-905/Harmony ISD

Category Summary

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

Stratum
Variance
A 51,221,560 0.9521 53,798,509 22 565 .015722520
A 53,683,999 0.9987 53,753,879 23 388 .007612891
A 60,144,190 0.9950 60,446,422 16 324 .007161340
A 61,346,460 1.0007 61,303,548 15 215 .003701080
D3 21,171,267 0.9515 22,250,412 20 764 .072297142
Random Totals: 247,567,476   251,552,770 96 2,256  
Catg D1 Exception Values: 2,317,142   2,589,557      
Total Test Values (4): 249,884,618   254,142,327      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 12,707,116

Confidence Interval Values (5)

State Lower Limit: 241,435,211 (State Test Value minus Margin of Error Percent)
Local Test Value: 249,884,618 (Within Confidence Interval)
State Upper Limit: 266,849,443 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 221,161,108 (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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