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2010 Confidence Interval Detail
158/Matagorda
158-904/Matagorda ISD

Category Summary

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

Stratum
Variance
A 45,500,562 0.9939 45,779,819 15 442 .037424605
A 41,652,570 0.9677 43,042,854 14 231 .010689819
A 42,910,073 0.9959 43,086,729 14 173 .019384760
A 47,832,618 0.9135 52,361,924 13 125 .007435607
C 7,284,807 0.9730 7,486,955 10 303 .013296274
C 7,030,960 0.9979 7,045,756 10 94 .020719102
C 5,894,590 0.9463 6,229,092 8 50 .039851774
C 6,260,740 0.9734 6,431,827 8 32 .005901919
Random Totals: 204,366,920   211,464,956 92 1,450  
Catg J Exception Values: 2,755,019   3,034,121      
Catg D1 Exception Values: 2,476,432   2,965,756      
Total Test Values (4): 209,598,371   217,464,833      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 10,873,242

Confidence Interval Values (5)

State Lower Limit: 206,591,591 (State Test Value minus Margin of Error Percent)
Local Test Value: 209,598,371 (Within Confidence Interval)
State Upper Limit: 228,338,075 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 253,028,876 (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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