taxes Property Tax

School and Appraisal Districts Property Value Study 2013 Report

2013 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 43,533,632 0.9006 48,338,477 13 520 .013343636
A 45,307,682 1.0034 45,154,158 18 355 .011089073
A 49,341,181 0.9629 51,242,269 12 287 .021607441
A 47,779,715 0.9805 48,729,949 10 117 .011564043
E 57,098,917 0.9197 62,084,285 20 546 .104109085
Random Totals: 243,061,127   255,549,138 73 1,825  
Catg J Exception Values: 4,764,791   4,793,422      
Catg D1 Exception Values: 6,259,343   6,806,085      
Total Test Values (4): 254,085,261   267,148,645      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 13,357,432

Confidence Interval Values (5)

State Lower Limit: 253,791,213 (State Test Value minus Margin of Error Percent)
Local Test Value: 254,085,261 (Within Confidence Interval)
State Upper Limit: 280,506,077 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 272,093,880 (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