taxes Property Tax

School and Appraisal Districts Property Value Study 2013 Report

2013 Confidence Interval Detail
072/Erath
072-910/Morgan Mill ISD

Category Summary

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

Stratum
Variance
A 2,167,150 0.8547 2,535,568 8 46 .050032412
A 1,906,070 0.9576 1,990,466 7 25 .003082975
A 1,939,660 1.0071 1,925,986 6 16 .010891979
A 2,582,120 1.0100 2,556,554 5 12 .001788441
E 49,913,620 0.9470 52,707,096 19 348 .030784312
G1 2,398,640 1.0899 2,200,789 8 31 .073043904
G1 2,316,140 0.9512 2,434,966 6 13 .204623037
G1 2,987,320 1.0470 2,853,219 4 6 .045623060
Random Totals: 66,210,720   69,204,644 63 497  
Catg J Exception Values: 49,320   52,051      
Catg D1 Exception Values: 4,659,580   3,932,216      
Catg G1 Exception Values: 1,598,790   1,633,765      
Total Test Values (4): 72,518,410   74,822,676      

Margin of Error

Margin of Error Percent: 5.6503272
Margin of Error Value: 4,227,726

Confidence Interval Values (5)

State Lower Limit: 70,594,950 (State Test Value minus Margin of Error Percent)
Local Test Value: 72,518,410 (Within Confidence Interval)
State Upper Limit: 79,050,402 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 78,614,321 (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