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2011 Confidence Interval Detail
044/Collingsworth
044-904/Samnorwood ISD

Category Summary

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

Stratum
Variance
D3 4,393,480 0.9719 4,520,506 22 987 .012393776
G1 1,656,370 1.0352 1,600,048 9 79 .003782068
G1 1,642,030 1.0234 1,604,485 8 36 .022372851
G1 1,715,790 1.0058 1,705,896 7 25 .010101401
G1 1,564,630 0.9859 1,587,007 6 14 .015052523
Random Totals: 10,972,300   11,017,942 52 1,141  
Catg J Exception Values: 545,587   490,839      
Catg D1 Exception Values: 12,058,910   10,729,634      
Total Test Values (4): 23,576,797   22,238,415      

Margin of Error

Margin of Error Percent: 5.0000011
Margin of Error Value: 1,111,921

Confidence Interval Values (5)

State Lower Limit: 21,126,494 (State Test Value minus Margin of Error Percent)
State Upper Limit: 23,350,336 (State Test Value plus Margin of Error Percent)
Local Test Value: 23,576,797 (Outside Confidence Interval)
Value Assigned (6): 29,310,783 (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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