taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
008/Austin
008-902/Sealy ISD

Category Summary

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

Stratum
Variance
A 101,298,788 0.9793 103,439,996 10 1,166 .005880764
A 103,371,380 0.9877 104,658,682 12 711 .002015244
A 103,471,063 0.9733 106,309,527 12 517 .005586768
A 104,701,746 1.0173 102,921,209 10 353 .009387973
D3 157,790,917 0.9670 163,175,716 15 4,277 .003262087
F1 24,808,933 1.0565 23,482,189 9 144 .003664422
F1 27,500,227 1.0626 25,880,131 10 55 .020773418
F1 23,240,971 1.0161 22,872,720 7 24 .004606704
F1 24,083,411 1.1286 21,339,191 6 9 .006418141
Random Totals: 670,267,436   674,079,361 91 7,256  
Catg J Exception Values: 20,745,670   23,286,519      
Catg D1 Exception Values: 11,630,576   11,569,245      
Total Test Values (4): 702,643,682   708,935,125      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 35,446,756

Confidence Interval Values (5)

State Lower Limit: 673,488,369 (State Test Value minus Margin of Error Percent)
Local Test Value: 702,643,682 (Within Confidence Interval)
State Upper Limit: 744,381,881 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,103,648,080 (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