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2009 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 34,358,264 0.9208 37,313,493 7 978 .006359694
A 34,298,053 0.9043 37,927,737 7 531 .043130139
A 34,548,890 0.8911 38,771,058 7 331 .015597867
A 33,533,990 1.0051 33,363,834 7 164 .019622949
D3 89,165,920 0.9301 95,867,025 20 3,778 .158094345
F1 16,576,220 0.9881 16,775,853 8 269 .003160803
F1 16,575,080 0.9527 17,398,006 13 103 .018652634
F1 15,877,730 0.9934 15,983,219 6 38 .002382473
F1 20,156,820 0.9372 21,507,490 5 11 .006757413
G1 18,189,520 0.9636 18,876,629 8 34 .018104631
G1 17,671,757 1.0577 16,707,721 5 12 .002768467
G1 20,247,380 0.9664 20,951,345 4 8 .007485477
G1 15,430,310 1.0160 15,187,313 3 5 .000383565
L1 11,792,780 1.0007 11,784,531 7 226 .002774492
L1 9,493,240 1.0257 9,255,377 6 36 .001251649
L1 19,620,600 0.9860 19,899,189 6 18 .000557360
Random Totals: 407,536,554   427,569,820 119 6,542  
Catg J Exception Values: 18,456,487   18,561,759      
Catg D1 Exception Values: 19,749,637   20,316,095      
Total Test Values (4): 445,742,678   466,447,674      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 23,322,384

Confidence Interval Values (5)

State Lower Limit: 443,125,290 (State Test Value minus Margin of Error Percent)
Local Test Value: 445,742,678 (Within Confidence Interval)
State Upper Limit: 489,770,058 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 554,487,480 (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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