taxes Property Tax

School and Appraisal Districts Property Value Study 2013 Report

2013 Confidence Interval Detail
168/Mitchell
168-903/Westbrook ISD

Category Summary

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

Stratum
Variance
A 6,157,590 0.8252 7,461,937 10 202 .100365154
A 7,408,320 0.8895 8,328,634 9 137 .028812923
A 6,787,810 0.9965 6,811,651 9 83 .006885725
A 11,254,100 0.9108 12,356,280 8 79 .010938919
G1 96,122,801 1.0135 94,842,428 3 5 .003843877
Random Totals: 127,730,621   129,800,930 39 506  
Catg D1 Exception Values: 10,784,530   10,870,473      
Catg G1 Exception Values: 536,814,016   530,373,815      
Total Test Values (4): 675,329,167   671,045,218      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 33,552,261

Confidence Interval Values (5)

State Lower Limit: 637,492,957 (State Test Value minus Margin of Error Percent)
Local Test Value: 675,329,167 (Within Confidence Interval)
State Upper Limit: 704,597,479 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 755,358,820 (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