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2010 Confidence Interval Detail
246/Williamson
246-913/Leander ISD

Category Summary

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

Stratum
Variance
A 1,386,964,797 0.9572 1,448,981,192 60 9,994 .004631884
A 1,304,451,248 0.9769 1,335,296,599 60 7,566 .004646836
A 1,342,850,257 0.9636 1,393,576,439 59 6,197 .003797546
A 1,268,662,086 0.9690 1,309,248,799 61 3,819 .003219913
B 89,192,336 1.0084 88,449,361 10 312 .001073721
B 103,611,618 0.9348 110,838,273 4 7 .004423938
B 61,398,659 0.9854 62,308,361 2 3 .000010835
B 47,601,757 0.9826 48,444,695 2 2 .007561512
F1 254,845,763 0.9865 258,333,262 10 344 .000716757
F1 237,135,585 0.9895 239,651,930 9 122 .000757735
F1 237,137,826 0.9866 240,358,632 8 45 .000117819
F1 220,552,735 0.9851 223,888,676 4 8 .002369371
L1 83,737,396 0.9890 84,668,752 11 514 .008196862
L1 67,805,791 1.0113 67,048,147 9 53 .008661008
L1 149,767,724 1.1002 136,127,726 7 16 .062469413
Random Totals: 6,855,715,578   7,047,220,844 316 29,002  
Catg J Exception Values: 40,612,580   38,607,223      
Catg D1 Exception Values: 1,261,999   1,112,460      
Total Test Values (4): 6,897,590,157   7,086,940,527      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 354,347,026

Confidence Interval Values (5)

State Lower Limit: 6,732,593,501 (State Test Value minus Margin of Error Percent)
Local Test Value: 6,897,590,157 (Within Confidence Interval)
State Upper Limit: 7,441,287,553 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 7,326,728,528 (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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