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2011 Confidence Interval Detail
184/Parker
119-903/Perrin-Whitt CISD

Category Summary

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

Stratum
Variance
A 1,711,300 0.9034 1,894,288 12 35 .017373443
A 1,405,020 0.9144 1,536,549 11 17 .006296065
A 1,590,980 0.9559 1,664,379 6 12 .003407769
A 1,381,630 0.9794 1,410,690 4 7 .000770967
D3 32,515,540 1.1083 29,338,212 14 797 .075315885
G1 1,101,070 0.9516 1,157,072 9 32 .045476088
G1 1,260,520 1.0078 1,250,764 4 7 .000436328
Random Totals: 40,966,060   38,251,954 60 907  
Catg D1 Exception Values: 1,992,570   1,317,035      
Catg G1 Exception Values: 1,711,530   1,651,186      
Total Test Values (4): 44,670,160   41,220,175      

Margin of Error

Margin of Error Percent: 10.3864164
Margin of Error Value: 4,281,299

Confidence Interval Values (5)

State Lower Limit: 36,938,876 (State Test Value minus Margin of Error Percent)
Local Test Value: 44,670,160 (Within Confidence Interval)
State Upper Limit: 45,501,474 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 49,216,806 (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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