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2011 Confidence Interval Detail
239/Washington
239-903/Burton ISD

Category Summary

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

Stratum
Variance
A 12,134,072 0.9447 12,844,365 11 283 .008628008
A 12,327,680 0.9455 13,038,265 10 147 .012026126
A 12,541,060 0.9477 13,233,154 11 106 .011268132
A 12,136,000 0.9913 12,242,510 11 59 .002543047
D3 188,539,048 0.9767 193,036,806 15 3,481 .068660202
G1 24,037,848 0.9865 24,366,800 8 37 .006726680
G1 23,667,477 1.0411 22,733,145 7 19 .010061610
G1 23,726,680 1.0066 23,571,111 6 14 .009583013
G1 23,293,900 1.0149 22,951,916 4 7 .000027601
Random Totals: 332,403,765   338,018,072 83 4,153  
Catg D1 Exception Values: 7,407,876   7,301,524      
Total Test Values (4): 339,811,641   345,319,596      

Margin of Error

Margin of Error Percent: 7.5515642
Margin of Error Value: 26,077,031

Confidence Interval Values (5)

State Lower Limit: 319,242,565 (State Test Value minus Margin of Error Percent)
Local Test Value: 339,811,641 (Within Confidence Interval)
State Upper Limit: 371,396,627 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 364,365,528 (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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