taxes Property Tax Assistance

2021 Confidence Interval Detail

Tarrant County
061-911/Northwest ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 1,113,476,491 0.9363 1,189,230,472 96 5,116 0.005489028
A 1,400,365,969 0.9817 1,426,470,377 102 5,176 0.002887970
A 1,503,065,454 0.9823 1,530,149,093 96 4,333 0.004255572
A 1,599,133,956 0.9880 1,618,556,636 100 3,189 0.009283156
B 345,871,622 0.8750 395,281,854 7 15 0.009284153
F1 684,816,388 0.7958 860,538,311 12 204 0.105652045
F1 565,703,482 0.7988 708,191,640 9 36 0.007992097
F1 662,376,000 0.8807 752,101,737 7 14 0.042980830
L1 505,624,604 1.0469 482,973,163 10 58 0.006294185
L1 666,680,530 1.0010 666,014,515 6 13 0.000001939
Random Totals: 9,047,114,496 9,629,507,798 445 18,154
CATG D1 EXCEPTION VALUES: 1,179,840 1,059,693
CATG F1 EXCEPTION VALUES: 578,426,229 584,375,777
CATG L1 EXCEPTION VALUES: 1,445,563,638 1,434,278,651
Total Test Values 11,072,284,203 11,649,221,919

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 582,461,096

Confidence Interval Values(5)

Local Test Value: 11,072,284,203 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 11,066,760,823 (State Test Value minus Margin of Error Percent)
State Upper Limit: 12,231,683,015 (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