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 0.8876 21,646,649 15 372 .012091022
A 19,929,412 0.9053 22,014,152 15 200 .018211105
A 20,306,463 0.9603 21,145,958 16 142 .004797608
A 19,045,012 0.9558 19,925,729 15 90 .010066019
E 49,712,151 0.9368 53,065,917 15 561 .035439941
Random Totals: 128,206,604   137,798,405 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   145,753,341      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 7,287,667

Confidence Interval Values (5)

Local Test Value: 136,274,641 (Outside Confidence Interval)
State Lower Limit: 138,465,674 (State Test Value minus Margin of Error Percent)
State Upper Limit: 153,041,008 (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