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2012 Confidence Interval Detail
109/Hill
109-903/Covington ISD

Category Summary

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

Stratum
Variance
A 4,177,970 0.9954 4,197,277 9 97 .005888095
A 4,394,230 0.9813 4,477,968 8 57 .001208138
A 3,926,000 0.9659 4,064,603 9 36 .004764316
A 4,046,980 0.9757 4,147,771 7 25 .001538711
D3 37,636,400 0.9694 38,824,427 16 1,193 .053960534
G1 4,951,378 0.9897 5,002,908 6 18 .022801341
G1 4,690,191 0.9659 4,855,773 5 11 .050751403
G1 4,709,448 1.0662 4,417,040 4 7 .079847141
G1 4,114,077 1.1059 3,720,117 2 3 .001037190
Random Totals: 72,646,674   73,707,884 66 1,447  
Catg J Exception Values: 9,696,720   10,863,548      
Catg D1 Exception Values: 2,519,151   2,178,214      
Total Test Values (4): 84,862,545   86,749,646      

Margin of Error

Margin of Error Percent: 5.3581394
Margin of Error Value: 4,648,167

Confidence Interval Values (5)

State Lower Limit: 82,101,479 (State Test Value minus Margin of Error Percent)
Local Test Value: 84,862,545 (Within Confidence Interval)
State Upper Limit: 91,397,813 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 85,617,435 (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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