taxes Property Tax

School and Appraisal Districts Property Value Study 2013 Report

2013 Confidence Interval Detail
072/Erath
018-906/Iredell ISD

Category Summary

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

Stratum
Variance
E 5,567,260 0.9883 5,633,168 17 52 .009314966
F1 1,255,300 1.0274 1,221,822 3 5 .000176487
Random Totals: 6,822,560   6,854,990 20 57  
Catg D1 Exception Values: 1,187,590   1,032,346      
Catg F1 Exception Values: 10,011,020   9,690,000      
Total Test Values (4): 18,021,170   17,577,336      

Margin of Error

Margin of Error Percent: 5.0000011
Margin of Error Value: 878,867

Confidence Interval Values (5)

State Lower Limit: 16,698,469 (State Test Value minus Margin of Error Percent)
Local Test Value: 18,021,170 (Within Confidence Interval)
State Upper Limit: 18,456,203 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 19,543,329 (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