taxes Property Tax Assistance

2019 Confidence Interval Detail

Tarrant County
220-902/Birdville ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 1,172,563,710 0.9357 1,253,140,654 97 8786 0.021809126
A 2,058,128,951 1.0022 2,053,611,007 100 11257 0.007845832
A 2,133,604,437 1.0066 2,119,614,978 100 8761 0.004978459
A 2,392,057,100 1.0137 2,359,728,815 100 6512 0.010276829
B 282,605,147 0.9857 286,705,029 25 473 0.014293159
B 425,000,993 1.0743 395,607,366 8 22 0.003716864
B 349,540,000 1.0446 334,616,121 5 11 0.003714991
F1 519,329,004 0.7989 650,055,081 12 846 0.094409717
F1 584,590,237 0.8502 687,591,434 10 297 0.047668131
F1 556,312,694 0.8886 626,055,249 10 97 0.143280220
F1 488,864,818 0.9126 535,683,561 8 21 0.020177131
L1 149,970,553 1.1122 134,841,353 12 656 0.014676029
L1 166,470,068 0.9584 173,695,814 11 118 0.019712806
L1 211,674,491 1.0594 199,806,014 9 36 0.047753725
L1 206,759,815 1.0810 191,267,174 3 5 0.016950952
Random Totals: 11,697,472,018 12,002,019,650 510 37,898
CATG B EXCEPTION VALUES: 285,561,920 289,372,595
CATG D1 EXCEPTION VALUES: 38,060 20,973
Total Test Values(2) 11,983,071,998 12,291,413,218

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 614,570,661

Confidence Interval Values(5)

Local Test Value: 11,983,071,998 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 11,676,842,557 (State Test Value minus Margin of Error Percent)
State Upper Limit: 12,905,983,879 (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