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2011 Confidence Interval Detail
236/Walker
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 1,375,980 0.9804 1,403,488 10 29 .002683276
A 1,651,920 0.9654 1,711,125 10 23 .005717049
A 1,616,660 0.9483 1,704,798 5 16 .002440799
A 2,117,330 0.9787 2,163,411 4 12 .003406193
D3 20,672,620 0.9601 21,531,736 15 604 .005464532
Random Totals: 27,434,510   28,514,558 44 684  
Catg D1 Exception Values: 2,073,940   2,059,956      
Total Test Values (4): 29,508,450   30,574,514      

Margin of Error

Margin of Error Percent: 5.0000010
Margin of Error Value: 1,528,726

Confidence Interval Values (5)

State Lower Limit: 29,045,788 (State Test Value minus Margin of Error Percent)
Local Test Value: 29,508,450 (Within Confidence Interval)
State Upper Limit: 32,103,240 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 25,738,411 (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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