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2008 Confidence Interval Detail
234/Van Zandt
234-906/Van ISD

Category Summary

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

Stratum
Variance
A 47,490,460 1.0580 44,887,013 21 946 .051209744
A 54,193,230 0.8927 60,707,102 17 677 .068794031
A 54,442,760 0.9887 55,064,994 15 477 .025614506
A 56,016,020 0.9990 56,072,092 15 311 .037328484
D3 190,664,500 0.8062 236,497,767 50 5,664 .396524861
G1 17,251,652 1.1439 15,081,434 7 52 .070615961
G1 17,150,312 1.2003 14,288,355 5 16 .060675334
G1 20,223,047 0.9960 20,304,264 3 5 .000562791
Random Totals: 457,431,981   502,903,021 133 8,148  
Catg D1 Exception Values: 11,419,520   7,842,815      
Catg G1 Exception Values: 54,769,588   51,932,149      
Total Test Values (4): 523,621,089   562,677,985      

Margin of Error

Margin of Error Percent: 7.5932480
Margin of Error Value: 42,725,535

Confidence Interval Values (5)

State Lower Limit: 519,952,450 (State Test Value minus Margin of Error Percent)
Local Test Value: 523,621,089 (Within Confidence Interval)
State Upper Limit: 605,403,520 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 506,453,811 (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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