taxes Property Tax Assistance

2016 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 19,990,909 0.9276 21,551,217 10 348 .051158945
A 16,796,100 0.9678 17,354,929 10 166 .027966273
A 27,646,928 0.9621 28,736,023 11 183 .014658845
A 34,234,685 0.9747 35,123,305 10 147 .001647166
E 63,382,097 1.0088 62,829,200 17 596 .015123565
Random Totals: 162,050,719   165,594,674 58 1,440  
Catg J Exception Values: 7,092,442   7,603,377      
Catg D1 Exception Values: 2,282,994   1,725,030      
Total Test Values (4): 171,426,155   174,923,081      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 8,746,154

Confidence Interval Values (5)

State Lower Limit: 166,176,927 (State Test Value minus Margin of Error Percent)
Local Test Value: 171,426,155 (Within Confidence Interval)
State Upper Limit: 183,669,235 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 205,719,051 (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