taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
008/Austin
008-901/Bellville ISD

Category Summary

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

Stratum
Variance
A 93,547,855 1.0109 92,539,178 10 1,028 .015026170
A 93,833,621 0.9985 93,974,583 11 614 .005687081
A 93,106,934 0.9858 94,448,097 10 425 .010522189
A 96,590,210 1.0239 94,335,589 10 268 .002679486
D3 462,549,986 1.0617 435,669,197 15 9,205 .026965455
G1 13,570,360 0.8383 16,187,952 7 25 .097916286
G1 13,224,490 1.0544 12,542,195 5 11 .014656064
G1 13,457,000 0.9730 13,830,421 4 7 .005879651
G1 12,544,129 0.9980 12,569,268 2 3 .006822753
Random Totals: 892,424,585   866,096,480 74 11,586  
Catg D1 Exception Values: 20,906,668   19,697,434      
Catg G1 Exception Values: 16,755,420   16,578,861      
Total Test Values (4): 930,086,673   902,372,775      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 45,118,639

Confidence Interval Values (5)

State Lower Limit: 857,254,136 (State Test Value minus Margin of Error Percent)
Local Test Value: 930,086,673 (Within Confidence Interval)
State Upper Limit: 947,491,414 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,044,651,390 (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