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2007 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 3,584,972 0.9527 3,762,960 6 86 .012831681
A 3,521,093 1.0917 3,225,330 6 49 .013198635
A 3,530,439 0.9764 3,615,771 6 35 .007152279
A 3,504,339 0.9418 3,720,895 7 25 .036280552
D3 33,470,150 0.9357 35,770,172 29 1,154 .153948346
Random Totals: 47,610,993   50,095,128 54 1,349  
Catg J Exception Values: 1,464,764   1,522,545      
Catg D1 Exception Values: 2,530,299   2,143,083      
Total Test Values (4): 51,606,056   53,760,756      

Margin of Error

Margin of Error Percent: 9.7020827
Margin of Error Value: 5,215,913

Confidence Interval Values (5)

State Lower Limit: 48,544,843 (State Test Value minus Margin of Error Percent)
Local Test Value: 51,606,056 (Within Confidence Interval)
State Upper Limit: 58,976,669 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 47,806,311 (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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