taxes Property Tax Assistance

2021 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 1,678,956,281 0.9062 1,852,743,634 145 10,934 0.018344907
A 2,090,036,939 0.9666 2,162,256,299 151 10,178 0.007653522
A 2,328,894,820 0.9959 2,338,482,599 150 8,781 0.009743990
A 2,538,235,473 0.9842 2,578,983,411 152 6,497 0.007432006
B 183,545,180 0.8638 212,485,737 10 27 0.009076914
B 372,647,927 1.0019 371,941,239 7 19 0.017125842
B 365,530,000 0.9333 391,653,273 8 12 0.004288979
B 668,693,833 0.9413 710,393,958 5 14 0.007572608
F1 602,329,795 0.8663 695,290,078 23 883 0.043370708
F1 609,442,981 0.8971 679,347,878 10 284 0.018217788
F1 513,711,770 0.8028 639,900,062 10 90 0.052050306
F1 479,038,490 0.9310 514,541,880 8 22 0.031618692
L1 236,011,829 1.0639 221,836,478 12 1,000 0.005906002
L1 203,061,499 1.0514 193,134,391 13 137 0.003348533
L1 237,209,543 0.9903 239,533,013 10 38 0.002823984
L1 125,334,037 1.0109 123,982,626 3 5 0.000182036
Random Totals: 13,232,680,397 13,926,506,556 717 38,921
CATG D1 EXCEPTION VALUES: 35,955 32,737
Total Test Values 13,232,716,352 13,926,539,293

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 696,326,965

Confidence Interval Values(5)

Local Test Value: 13,232,716,352 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 13,230,212,328 (State Test Value minus Margin of Error Percent)
State Upper Limit: 14,622,866,258 (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