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2009 Confidence Interval Detail
114/Howard
114-902/Coahoma ISD

Category Summary

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

Stratum
Variance
A 16,858,821 0.9443 17,853,247 12 506 .053330672
A 17,172,161 0.9778 17,562,038 11 274 .003748606
A 16,455,512 0.9481 17,356,304 12 176 .006377782
A 17,340,948 0.9418 18,412,559 14 103 .011385588
G1 53,917,395 0.9873 54,610,954 15 99 .069393633
G1 54,083,073 1.0673 50,672,794 13 31 .038184332
G1 60,340,840 1.0310 58,526,518 8 12 .000776935
Random Totals: 236,168,750   234,994,414 85 1,201  
Catg J Exception Values: 8,276,370   8,428,126      
Catg D1 Exception Values: 16,602,227   16,177,481      
Catg G1 Exception Values: 46,236,815   43,629,867      
Total Test Values (4): 307,284,162   303,229,888      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 15,161,494

Confidence Interval Values (5)

State Lower Limit: 288,068,394 (State Test Value minus Margin of Error Percent)
Local Test Value: 307,284,162 (Within Confidence Interval)
State Upper Limit: 318,391,382 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 350,760,674 (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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