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2011 Confidence Interval Detail
014/Bell
014-901/Academy ISD

Category Summary

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

Stratum
Variance
A 39,815,498 0.9669 41,178,507 11 494 .007556752
A 39,779,125 0.9876 40,278,579 14 318 .007314096
A 38,112,756 1.0049 37,926,914 12 225 .009717163
A 42,761,897 0.9901 43,189,473 10 109 .002992328
D3 54,439,499 1.0029 54,282,081 15 1,359 .062127306
Random Totals: 214,908,775   216,855,554 62 2,505  
Catg J Exception Values: 4,292,852   4,344,844      
Catg D1 Exception Values: 5,949,914   8,132,564      
Total Test Values (4): 225,151,541   229,332,962      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 11,466,648

Confidence Interval Values (5)

State Lower Limit: 217,866,314 (State Test Value minus Margin of Error Percent)
Local Test Value: 225,151,541 (Within Confidence Interval)
State Upper Limit: 240,799,610 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 237,444,513 (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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