taxes Property Tax

School and Appraisal Districts Property Value Study 2013 Report

2013 Confidence Interval Detail
234/Van Zandt
234-905/Martins Mill ISD

Category Summary

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

Stratum
Variance
A 5,066,360 0.9961 5,086,196 9 100 .016641623
A 5,248,500 1.0253 5,118,990 9 57 .012248298
A 4,840,520 1.0256 4,719,696 8 36 .006226364
A 5,336,880 0.9877 5,403,341 8 25 .001345568
E 62,604,740 0.9292 67,374,882 15 557 .027497508
Random Totals: 83,097,000   87,703,105 49 775  
Catg D1 Exception Values: 4,300,920   2,327,363      
Total Test Values (4): 87,397,920   90,030,468      

Margin of Error

Margin of Error Percent: 6.4044497
Margin of Error Value: 5,765,956

Confidence Interval Values (5)

State Lower Limit: 84,264,512 (State Test Value minus Margin of Error Percent)
Local Test Value: 87,397,920 (Within Confidence Interval)
State Upper Limit: 95,796,424 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 90,073,017 (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