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2009 Confidence Interval Detail
014/Bell
014-902/Bartlett ISD

Category Summary

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

Stratum
Variance
A 3,281,755 1.0814 3,034,728 8 93 .018192148
A 3,119,337 1.0780 2,893,634 7 53 .014066080
A 3,329,647 0.9703 3,431,564 7 39 .008235635
A 3,009,260 0.9444 3,186,425 7 25 .011185459
D3 11,712,827 0.9969 11,749,250 20 700 .011445407
F1 1,943,068 0.8231 2,360,671 6 48 .023135863
L1 499,891 1.0079 495,973 5 18 .008600902
L1 479,686 1.0133 473,390 4 7 .003203573
Random Totals: 27,375,471   27,625,635 64 983  
Catg J Exception Values: 2,663,866   2,695,659      
Catg D1 Exception Values: 5,648,705   4,980,193      
Catg F1 Exception Values: 783,353   824,366      
Catg L1 Exception Values: 357,686   362,218      
Total Test Values (4): 36,829,081   36,488,071      

Margin of Error

Margin of Error Percent: 5.0000012
Margin of Error Value: 1,824,404

Confidence Interval Values (5)

State Lower Limit: 34,663,667 (State Test Value minus Margin of Error Percent)
Local Test Value: 36,829,081 (Within Confidence Interval)
State Upper Limit: 38,312,475 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 33,828,300 (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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