taxes Property Tax

School and Appraisal Districts Property Value Study 2012 Report

2012 Confidence Interval Detail
039/Clay
005-904/Windthorst ISD

Category Summary

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

Stratum
Variance
A 4,296,270 0.9806 4,381,267 14 39 .002248859
D3 5,469,260 0.9280 5,893,599 15 230 .041950648
G1 992,900 0.9747 1,018,672 6 13 .027843627
Random Totals: 10,758,430   11,293,538 35 282  
Catg J Exception Values: 1,935,390   1,979,431      
Catg D1 Exception Values: 1,261,090   1,295,527      
Catg G1 Exception Values: 509,660   537,050      
Total Test Values (4): 14,464,570   15,105,546      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 755,277

Confidence Interval Values (5)

State Lower Limit: 14,350,269 (State Test Value minus Margin of Error Percent)
Local Test Value: 14,464,570 (Within Confidence Interval)
State Upper Limit: 15,860,823 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 13,570,257 (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