taxes Property Tax

School and Appraisal Districts Property Value Study 2014 Report

2014 Confidence Interval Detail
091/Grayson
091-901/Bells ISD

Category Summary

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

Stratum
Variance
A 19,213,566 0.9140 21,021,407 15 372 .010235118
A 19,929,412 0.9152 21,776,018 15 200 .016849221
A 20,306,463 0.9645 21,053,876 16 142 .004354241
A 19,045,012 0.9584 19,871,674 15 90 .009483427
E 49,712,151 0.9368 53,065,917 15 561 .035439941
Random Totals: 128,206,604   136,788,892 76 1,365  
Catg J Exception Values: 5,830,012   6,256,388      
Catg D1 Exception Values: 2,238,025   1,698,548      
Total Test Values (4): 136,274,641   144,743,828      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 7,237,191

Confidence Interval Values (5)

Local Test Value: 136,274,641 (Outside Confidence Interval)
State Lower Limit: 137,506,637 (State Test Value minus Margin of Error Percent)
State Upper Limit: 151,981,019 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 188,203,714 (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