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2007 Confidence Interval Detail
170/Montgomery
093-905/Richards ISD

Category Summary

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

Stratum
Variance
A 2,070,879 0.9086 2,279,198 15 50 .006829333
A 2,120,615 0.8844 2,397,801 14 26 .015556099
A 1,946,856 0.9506 2,048,029 10 15 .018747405
A 2,033,971 1.1095 1,833,232 6 7 .018603944
D3 4,767,270 1.0111 4,714,934 21 612 .032071883
Random Totals: 12,939,591   13,273,194 66 710  
Catg D1 Exception Values: 3,033,820   2,827,237      
Total Test Values (4): 15,973,411   16,100,431      

Margin of Error

Margin of Error Percent: 5.0000028
Margin of Error Value: 805,022

Confidence Interval Values (5)

State Lower Limit: 15,295,409 (State Test Value minus Margin of Error Percent)
Local Test Value: 15,973,411 (Within Confidence Interval)
State Upper Limit: 16,905,453 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 15,098,138 (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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