taxes Property Tax Assistance

2022 Confidence Interval Detail

Dallas County
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
L1 272,358,580 1.0168 267,858,556 5 9 0.000838216
Random Totals: 272,358,580 267,858,556 5 9
CATG D1 EXCEPTION VALUES: 0 0
CATG L1 EXCEPTION VALUES: 1,773,889,460 1,773,889,458
Total Test Values 2,046,248,040 2,041,748,014

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 102,087,401

Confidence Interval Values(5)

Local Test Value: 2,046,248,040 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 1,939,660,613 (State Test Value minus Margin of Error Percent)
State Upper Limit: 2,143,835,415 (State Test Value plus Margin of Error Percent)

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, D2, E, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values