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2008 Confidence Interval Detail
234/Van Zandt
234-905/Martins Mill ISD

Category Summary

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

Stratum
Variance
A 4,589,570 0.8729 5,257,842 9 97 .087599155
A 4,145,790 0.9189 4,511,688 8 50 .012035846
A 4,925,230 0.8150 6,043,227 7 40 .133819773
A 4,347,670 0.9485 4,583,732 6 23 .038808474
D3 61,449,860 0.9292 66,132,006 42 1,884 .174447810
Random Totals: 79,458,120   86,528,495 72 2,094  
Catg D1 Exception Values: 4,283,140   2,762,744      
Total Test Values (4): 83,741,260   89,291,239      

Margin of Error

Margin of Error Percent: 9.6632974
Margin of Error Value: 8,628,478

Confidence Interval Values (5)

State Lower Limit: 80,662,761 (State Test Value minus Margin of Error Percent)
Local Test Value: 83,741,260 (Within Confidence Interval)
State Upper Limit: 97,919,717 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 85,289,091 (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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