taxes Property Tax Assistance

2025 Confidence Interval Detail

Tarrant County
220-902/Birdville ISD

Category Summary

(1)
Category 		(1)
Stratum
Number 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 2 2,330,843,607 0.8992 2,592,130,346 200 10,079 2,344,476,980
A 3 2,268,614,461 0.9708 2,336,850,495 199 7,473 2,324,210,663
A 4 2,288,047,091 0.9614 2,379,911,682 199 5,911 3,237,686,848
A 5 2,405,994,450 0.9520 2,527,305,095 154 4,241 25,853,115,265
B 2 559,008,680 0.9570 584,126,102 9 68 99,556,935,980,811
B 3 583,787,756 0.9116 640,399,030 7 22 67,669,950,328,759
B 4 539,753,970 1.0908 494,823,955 6 14 79,738,622,931,137
B 5 600,636,967 1.1235 534,612,343 5 11 205,322,444,225,546
F1 2 705,870,895 0.9727 725,682,014 18 982 235,693,660,742
F1 3 771,892,761 0.9330 827,323,431 11 379 570,688,347,748
F1 4 720,819,470 0.9697 743,342,755 10 143 1,527,421,665,708
F1 5 879,775,321 0.8879 990,849,556 9 57 45,589,264,364,749
L1 2 270,411,832 1.0090 267,999,833 10 1,008 157,298,604,661
L1 3 268,453,107 1.0526 255,038,103 11 146 760,277,702,119
L1 4 269,698,313 0.9559 282,140,719 10 43 4,826,493,261,589
L1 5 1,060,368,978 0.9688 1,094,517,938 6 19 56,792,378,796,149
Random Totals: 16,523,977,659 17,277,053,397 864 30,596
CATG D1 EXCEPTION VALUES: 28,111 24,724
Total Test Values 16,524,005,770 17,277,078,121

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 863,853,906

Confidence Interval Values(5)

Local Test Value: 16,524,005,770 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 16,413,224,215 (State Test Value minus Margin of Error Percent)
State Upper Limit: 18,140,932,027 (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