taxes Property Tax Assistance

2023 Confidence Interval Detail

Tarrant 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
A 1,819,677,090 0.9747 1,866,909,911 119 5,001 0.005852008
A 2,923,414,121 0.9869 2,962,219,192 152 5,822 0.006135824
A 3,592,520,571 0.9865 3,641,683,295 145 5,399 0.008254610
A 5,111,958,141 0.9731 5,253,271,135 146 4,553 0.021810348
B 2,806,598,090 1.0073 2,786,258,404 9 46 0.003034622
F1 905,720,762 0.9499 953,490,643 12 529 0.024276116
F1 955,073,056 0.8861 1,077,838,908 12 179 0.045505839
F1 1,008,895,826 0.6959 1,449,771,269 12 71 0.132824336
F1 984,223,496 0.8260 1,191,553,869 5 7 0.102099445
L1 644,287,080 1.0195 631,963,786 11 593 0.003286775
L1 721,930,602 1.0108 714,217,058 10 52 0.002362067
L1 561,720,754 0.9802 573,067,490 5 11 0.001929369
L1 879,636,675 1.0000 879,636,675 4 8 0.000000000
Random Totals: 22,915,656,264 23,981,881,635 642 22,271
CATG D1 EXCEPTION VALUES: 56,389 42,046
CATG J EXCEPTION VALUES: 3,778,700 3,919,699
CATG L1 EXCEPTION VALUES: 1,122,036,636 1,122,036,636
Total Test Values 24,041,527,989 25,107,880,016

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,255,394,001

Confidence Interval Values(5)

Local Test Value: 24,041,527,989 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 23,852,486,015 (State Test Value minus Margin of Error Percent)
State Upper Limit: 26,363,274,017 (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