taxes Property Tax Assistance

2025 Confidence Interval Detail

Tarrant County
061-911/Northwest 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 2,146,927,368 0.9677 2,218,587,752 150 6,801 2,260,417,095
A 3 2,022,156,140 0.9810 2,061,321,244 150 5,115 2,855,019,556
A 4 2,021,647,947 0.9393 2,152,292,076 148 4,042 9,082,022,720
A 5 2,027,568,767 0.9367 2,164,587,132 109 2,770 63,737,588,433
B 0 846,648,593 1.0929 774,680,751 7 25 1,267,703,655,176,960
C1 2 48,280,554 0.6282 76,855,387 10 211 24,736,246,945
C1 3 45,811,367 0.5792 79,094,211 9 54 536,976,734,774
C1 4 68,466,069 0.6444 106,247,779 8 35 10,774,043,722,409
C1 5 61,795,064 0.9454 65,363,935 7 13 7,444,424,889,388
F1 2 3,187,919,336 1.0882 2,929,534,402 10 355 2,183,046,426,089
F1 3 2,283,338,502 0.9458 2,414,187,462 10 90 37,486,214,501,849
F1 4 1,542,895,264 0.9861 1,564,643,813 7 37 308,043,420,235,625
L1 2 3,621,338,306 1.0300 3,515,862,433 10 110 58,737,160,525,650
L1 3 2,859,070,891 1.0229 2,795,063,927 6 27 843,549,711,671,709
L1 4 2,054,856,832 1.0002 2,054,445,943 4 9 665,995,175,481,281
Random Totals: 24,838,721,000 24,972,768,247 645 19,694
CATG D1 EXCEPTION VALUES: 836,198 793,739
CATG F1 EXCEPTION VALUES: 799,683,432 751,518,802
CATG L1 EXCEPTION VALUES: 3,095,674,958 2,800,800,594
Total Test Values 28,734,915,588 28,525,881,382

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,426,294,069

Confidence Interval Values(5)

Local Test Value: 28,734,915,588 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 27,099,587,313 (State Test Value minus Margin of Error Percent)
State Upper Limit: 29,952,175,451 (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