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2006 Confidence Interval Detail
237/Waller
237-902/Hempstead ISD

Category Summary

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

Stratum
Variance
A 27,438,728 1.0057 27,283,214 11 762 .017072887
A 27,284,492 0.9039 30,185,299 11 384 .020198987
A 27,328,385 0.9640 28,348,947 12 246 .006255551
A 27,332,657 0.9863 27,712,316 10 147 .048024228
D3 117,069,860 1.0345 113,165,645 24 4,150 .083901778
F1 10,558,763 0.9598 11,001,003 9 126 .010106693
F1 10,474,149 0.9499 11,026,581 6 36 .012411181
F1 10,850,250 0.9349 11,605,787 6 13 .004725530
L1 6,027,974 0.9182 6,564,990 7 136 .060539295
L1 6,235,825 0.9676 6,444,631 7 29 .007433298
L1 5,864,388 0.9953 5,892,081 4 10 .004734179
L1 5,800,845 0.9169 6,326,584 3 4 .019776920
Random Totals: 282,266,316   285,557,078 110 6,043  
Catg D1 Exception Values: 10,293,640   10,137,000      
Catg F1 Exception Values: 3,600,880   3,783,294      
Total Test Values (4): 296,160,836   299,477,372      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 14,973,869

Confidence Interval Values (5)

State Lower Limit: 284,503,503 (State Test Value minus Margin of Error Percent)
Local Test Value: 296,160,836 (Within Confidence Interval)
State Upper Limit: 314,451,241 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 340,334,760 (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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