taxes Property Tax Assistance

2019 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 1,761,570,134 0.9882 1,782,604,871 148 6097 0.006036785
A 2,335,898,883 0.9882 2,363,791,624 151 5962 0.005023999
A 2,384,231,577 1.0007 2,382,563,782 147 4577 0.004308666
A 2,456,301,784 0.9835 2,497,510,711 149 2815 0.004858154
B 325,974,605 0.9435 345,495,077 36 197 0.180820196
B 326,598,094 1.0372 314,884,395 6 10 0.002675784
B 394,560,614 1.0981 359,314,720 7 9 0.010209776
B 544,590,000 0.9835 553,726,487 4 7 0.013631418
F1 868,734,809 1.0113 859,027,795 17 538 0.034289602
F1 754,172,363 1.0001 754,096,953 10 131 0.004928553
F1 748,405,464 0.9845 760,188,384 9 47 0.034193621
F1 856,252,534 0.8013 1,068,538,820 3 6 0.118428959
L1 305,222,578 0.9386 325,189,195 11 359 0.026190585
L1 286,105,046 0.9824 291,230,706 9 33 0.034993445
L1 231,391,174 0.9905 233,610,473 5 6 0.005158970
L1 526,625,174 1.0573 498,084,909 4 7 0.055629995
Random Totals: 15,106,634,833 15,389,858,902 716 20,801
CATG D1 EXCEPTION VALUES: 78,441 47,845
CATG L1 EXCEPTION VALUES: 1,060,681,768 1,060,681,768
Total Test Values(2) 16,167,395,042 16,450,588,515

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 822,529,426

Confidence Interval Values(5)

Local Test Value: 16,167,395,042 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 15,628,059,089 (State Test Value minus Margin of Error Percent)
State Upper Limit: 17,273,117,941 (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