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2007 Confidence Interval Detail
210/Shelby
210-901/Center ISD

Category Summary

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

Stratum
Variance
A 33,520,879 0.8742 38,344,634 15 962 .057156159
A 33,570,064 0.9233 36,358,783 15 543 .023569002
A 33,505,424 0.9619 34,832,544 15 338 .041832989
A 33,447,647 0.9205 36,336,390 15 179 .028612660
D3 83,529,048 1.0215 81,770,972 21 4,732 .111853374
F1 13,481,029 0.8501 15,858,168 10 234 .083732100
F1 13,580,253 0.8743 15,532,715 9 97 .017834564
F1 13,906,238 0.7798 17,833,083 8 40 .077709957
F1 12,949,740 0.8437 15,348,750 4 8 .017624249
L1 37,286,964 0.9902 37,655,993 21 716 .004311246
Random Totals: 308,777,286   329,872,032 133 7,849  
Catg J Exception Values: 19,101,604   18,993,383      
Catg D1 Exception Values: 18,942,008   17,208,263      
Total Test Values (4): 346,820,898   366,073,678      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 18,303,684

Confidence Interval Values (5)

Local Test Value: 346,820,898 (Outside Confidence Interval)
State Lower Limit: 347,769,994 (State Test Value minus Margin of Error Percent)
State Upper Limit: 384,377,362 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 371,810,039 (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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