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2009 Confidence Interval Detail
073/Falls
073-904/Westphalia ISD

Category Summary

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

Stratum
Variance
A 907,750 0.9268 979,445 15 31 .110400201
A 854,210 0.9844 867,747 11 16 .035397191
A 972,400 0.9621 1,010,706 9 13 .020546089
A 1,201,950 1.1709 1,026,518 7 10 .062054794
D3 5,824,650 0.9225 6,313,984 28 439 .049734041
Random Totals: 9,760,960   10,198,400 70 509  
Catg J Exception Values: 414,870   439,714      
Catg D1 Exception Values: 2,190,620   2,833,228      
Total Test Values (4): 12,366,450   13,471,342      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 673,567

Confidence Interval Values (5)

Local Test Value: 12,366,450 (Outside Confidence Interval)
State Lower Limit: 12,797,775 (State Test Value minus Margin of Error Percent)
State Upper Limit: 14,144,909 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 15,055,172 (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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