taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 Confidence Interval Detail
198/Robertson
198-906/Mumford ISD

Category Summary

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

Stratum
Variance
G1 11,206,748 0.9843 11,385,500 8 25 .059997683
G1 11,821,509 0.9718 12,164,549 6 12 .015450084
G1 16,025,936 0.9985 16,050,011 4 6 .041458306
Random Totals: 39,054,193   39,600,060 18 43  
Catg J Exception Values: 9,247,021   9,298,814      
Catg D1 Exception Values: 5,223,496   5,328,115      
Catg G1 Exception Values: 5,753,984   4,930,062      
Total Test Values (4): 59,278,694   59,157,051      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,957,852

Confidence Interval Values (5)

State Lower Limit: 56,199,199 (State Test Value minus Margin of Error Percent)
Local Test Value: 59,278,694 (Within Confidence Interval)
State Upper Limit: 62,114,903 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 69,320,508 (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