taxes Property Tax

School and Appraisal Districts Property Value Study 2015 Report

2015 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 20,423,768 0.8996 22,703,166 7 392 .060730251
A 21,485,329 0.9283 23,144,812 7 216 .004209611
A 21,853,429 0.9067 24,102,161 11 155 .025798722
A 22,577,462 0.9705 23,263,742 7 104 .000769928
E 53,881,660 1.0283 52,398,775 19 576 .012389209
L1 684,527 1.0857 630,494 7 23 .043595152
L1 843,905 1.0997 767,396 3 9 .005624191
L1 327,771 1.0389 315,498 3 2 .001013211
Random Totals: 142,077,851   147,326,044 64 1,477  
Catg J Exception Values: 5,052,131   6,199,295      
Catg D1 Exception Values: 2,240,754   1,712,121      
Catg L1 Exception Values: 3,180,882   3,074,967      
Total Test Values (4): 152,551,618   158,312,427      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 7,915,621

Confidence Interval Values (5)

State Lower Limit: 150,396,806 (State Test Value minus Margin of Error Percent)
Local Test Value: 152,551,618 (Within Confidence Interval)
State Upper Limit: 166,228,048 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 194,869,124 (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