taxes Property Tax

School and Appraisal Districts Property Value Study 2014 Report

2014 Confidence Interval Detail
091/Grayson
091-918/Tom Bean ISD

Category Summary

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

Stratum
Variance
A 27,233,545 0.9473 28,748,596 11 433 .047514563
A 26,163,452 0.9091 28,779,509 11 246 .014162815
A 28,492,223 0.9095 31,327,348 11 192 .013989868
A 29,027,316 0.9340 31,078,497 11 129 .022509150
E 54,204,002 0.9834 55,118,977 15 535 .007943698
Random Totals: 165,120,538   175,052,927 59 1,535  
Catg D1 Exception Values: 2,993,287   2,570,209      
Total Test Values (4): 168,113,825   177,623,136      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 8,881,157

Confidence Interval Values (5)

Local Test Value: 168,113,825 (Outside Confidence Interval)
State Lower Limit: 168,741,979 (State Test Value minus Margin of Error Percent)
State Upper Limit: 186,504,293 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 167,044,486 (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