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2008 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 29,172,051 0.9984 29,218,801 10 416 .002645230
A 26,251,931 0.9774 26,858,943 19 231 .006723860
A 37,416,112 0.9991 37,449,817 31 244 .005358030
A 34,569,266 0.9965 34,690,683 9 93 .000248910
D3 46,674,178 0.9581 48,715,351 13 1,317 .006980688
Random Totals: 174,083,538   176,933,595 82 2,301  
Catg J Exception Values: 12,666,610   12,740,191      
Catg D1 Exception Values: 5,824,718   4,983,211      
Total Test Values (4): 192,574,866   194,656,997      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 9,732,850

Confidence Interval Values (5)

State Lower Limit: 184,924,147 (State Test Value minus Margin of Error Percent)
Local Test Value: 192,574,866 (Within Confidence Interval)
State Upper Limit: 204,389,847 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 193,627,561 (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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