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2008 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 3,330,100 0.9930 3,353,575 14 81 .010884371
A 3,677,640 0.9992 3,680,584 14 52 .007296477
A 3,325,130 0.9745 3,412,140 11 33 .007377997
A 4,632,760 0.9263 5,001,360 10 32 .013661085
D3 35,052,460 0.9625 36,418,140 41 1,172 .041797191
Random Totals: 50,018,090   51,865,799 90 1,370  
Catg J Exception Values: 9,716,562   10,482,346      
Catg D1 Exception Values: 2,532,321   2,072,991      
Total Test Values (4): 62,266,973   64,421,136      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 3,221,057

Confidence Interval Values (5)

State Lower Limit: 61,200,079 (State Test Value minus Margin of Error Percent)
Local Test Value: 62,266,973 (Within Confidence Interval)
State Upper Limit: 67,642,193 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 76,074,173 (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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