taxes Property Tax Assistance

2016 Confidence Interval Detail

091/Grayson
091-902/Collinsville ISD

Category Summary

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

Stratum
Variance
A 15,547,031 1.0200 15,242,187 10 250 .008474025
A 17,606,849 0.9693 18,164,499 14 180 .017199915
A 22,744,658 0.9713 23,416,718 9 172 .007549454
A 33,153,770 0.9545 34,734,175 9 143 .007143717
D2 8,157,625 1.0361 7,873,395 14 294 .033357917
E 48,204,539 1.0821 44,547,213 14 394 .043688367
Random Totals: 145,414,472   143,978,187 70 1,433  
Catg J Exception Values: 8,882,501   9,763,116      
Catg D1 Exception Values: 3,116,875   2,706,268      
Total Test Values (4): 157,413,848   156,447,571      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 7,822,378

Confidence Interval Values (5)

State Lower Limit: 148,625,193 (State Test Value minus Margin of Error Percent)
Local Test Value: 157,413,848 (Within Confidence Interval)
State Upper Limit: 164,269,949 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 150,886,461 (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