taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
080/Franklin
080-901/Mount Vernon ISD

Category Summary

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

Stratum
Variance
A 129,071,740 0.9754 132,326,984 15 1,393 .019091162
A 128,940,340 0.9265 139,169,282 15 516 .018693750
A 138,933,070 0.9807 141,667,248 15 326 .026848095
A 153,280,870 1.0131 151,298,855 15 214 .024749575
D3 135,086,120 0.9727 138,877,475 20 5,266 .028106369
L1 3,067,640 0.9447 3,247,211 7 22 .014762016
L1 2,528,770 0.9927 2,547,366 4 8 .000103558
L1 4,766,910 0.9889 4,820,417 3 7 .000708037
Random Totals: 695,675,460   713,954,838 94 7,752  
Catg D1 Exception Values: 14,227,210   10,886,998      
Catg L1 Exception Values: 65,923,380   65,923,382      
Total Test Values (4): 775,826,050   790,765,218      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 39,538,261

Confidence Interval Values (5)

State Lower Limit: 751,226,957 (State Test Value minus Margin of Error Percent)
Local Test Value: 775,826,050 (Within Confidence Interval)
State Upper Limit: 830,303,479 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 914,724,472 (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