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2006 Confidence Interval Detail
234/Van Zandt
234-907/Wills Point ISD

Category Summary

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

Stratum
Variance
A 56,935,288 0.9377 60,718,021 16 1,169 .037234282
A 56,915,442 0.9887 57,565,937 15 689 .050520534
A 56,969,711 0.9902 57,533,540 19 470 .037554504
A 56,546,771 1.0042 56,310,268 15 285 .010305673
D3 190,507,150 0.9699 196,419,373 48 5,637 .080152124
F1 8,842,704 0.9285 9,523,645 12 118 .015229848
F1 8,865,795 0.9187 9,650,370 11 42 .012575448
F1 9,802,551 1.0231 9,581,225 7 17 .018689146
Random Totals: 445,385,412   457,302,379 143 8,427  
Catg J Exception Values: 24,293,145   27,432,397      
Catg D1 Exception Values: 11,657,260   7,912,247      
Catg F1 Exception Values: 4,704,030   4,503,525      
Total Test Values (4): 486,039,847   497,150,548      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 24,857,527

Confidence Interval Values (5)

State Lower Limit: 472,293,021 (State Test Value minus Margin of Error Percent)
Local Test Value: 486,039,847 (Within Confidence Interval)
State Upper Limit: 522,008,075 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 449,888,293 (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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