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2009 Confidence Interval Detail
101/Harris
237-904/Waller ISD

Category Summary

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

Stratum
Variance
A 80,695,838 1.0643 75,820,575 22 1,052 .018057880
A 89,551,662 1.0567 84,746,534 7 676 .018258427
A 90,972,911 0.9739 93,410,936 11 422 .023087125
A 104,324,465 0.9724 107,285,546 8 268 .072165143
C 14,740,031 1.1874 12,413,703 7 630 .022354903
C 12,691,019 1.0354 12,257,117 7 285 .026025033
C 12,067,577 0.9853 12,247,617 7 132 .086987766
C 9,989,191 0.9447 10,573,929 5 23 .029770291
D3 57,870,030 0.9884 58,549,201 15 1,515 .075831113
F1 17,964,923 0.9641 18,633,879 6 65 .011904929
F1 17,937,795 0.9877 18,161,177 5 21 .001660782
F1 19,285,362 0.9756 19,767,694 4 12 .003200890
F1 13,965,566 1.0007 13,955,797 3 5 .001804655
Random Totals: 542,056,370   537,823,705 107 5,106  
Catg J Exception Values: 18,448,126   18,878,101      
Catg D1 Exception Values: 6,144,681   4,380,103      
Total Test Values (4): 566,649,177   561,081,909      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 28,054,095

Confidence Interval Values (5)

State Lower Limit: 533,027,814 (State Test Value minus Margin of Error Percent)
Local Test Value: 566,649,177 (Within Confidence Interval)
State Upper Limit: 589,136,004 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 615,034,169 (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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