taxes Property Tax Assistance

2016 Confidence Interval Detail

057/Dallas
220-906/Grapevine-Colleyville ISD

Category Summary

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

Stratum
Variance
No random test values
Random Totals: 0   0 0 0  
Catg L1 Exception Values: 1,515,305,247   1,518,610,209      
Total Test Values (4): 1,515,305,247   1,518,610,209      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 75,930,510

Confidence Interval Values (5)

State Lower Limit: 1,442,679,699 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,515,305,247 (Within Confidence Interval)
State Upper Limit: 1,594,540,719 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 262,133,262 (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