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2009 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 2,119,620 0.9653 2,195,815 11 48 .012901663
A 2,319,060 0.9573 2,422,501 10 29 .005734229
A 2,124,180 0.9436 2,251,145 8 18 .005379052
A 2,187,850 0.9931 2,203,051 6 10 .010044937
D3 4,955,840 1.0542 4,701,043 20 298 .063389216
Random Totals: 13,706,550   13,773,555 55 403  
Catg D1 Exception Values: 3,086,705   2,875,487      
Total Test Values (4): 16,793,255   16,649,042      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 832,452

Confidence Interval Values (5)

State Lower Limit: 15,816,590 (State Test Value minus Margin of Error Percent)
Local Test Value: 16,793,255 (Within Confidence Interval)
State Upper Limit: 17,481,494 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 18,355,901 (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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