taxes Property Tax Assistance

2019 Confidence Interval Detail

Tarrant County
220-907/Keller ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 3,658,099,525 0.9947 3,677,590,756 246 17917 0.004331171
A 4,481,867,271 1.0051 4,459,125,730 248 16031 0.004386232
A 4,291,221,816 1.0062 4,264,780,179 249 10774 0.004979317
A 4,475,853,656 0.9987 4,481,679,840 248 5956 0.008680704
B 214,260,608 0.9847 217,589,731 3 9 0.005467444
B 181,680,000 1.0184 178,397,486 3 5 0.001557477
B 211,450,000 0.9528 221,919,199 5 6 0.011026037
B 225,800,000 0.9234 244,532,435 4 6 0.008852993
F1 543,823,934 0.9117 596,494,389 16 405 0.049174425
F1 590,564,179 0.9269 637,139,043 13 165 0.042326701
F1 455,952,910 0.7792 585,155,172 9 44 0.055507799
F1 439,756,808 0.8101 542,842,622 7 14 0.021934604
L1 80,914,571 1.1016 73,451,862 11 482 0.080729886
L1 92,901,534 1.0364 89,638,686 10 83 0.006929485
L1 118,016,429 1.0410 113,368,328 8 22 0.009429869
L1 157,422,512 1.0914 144,239,062 3 4 0.002577016
Random Totals: 20,219,585,753 20,527,944,520 1,083 51,923
CATG D1 EXCEPTION VALUES: 304,240 142,148
Total Test Values(1) 20,219,889,993 20,528,086,668

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,026,404,333

Confidence Interval Values(5)

Local Test Value: 20,219,889,993 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 19,501,682,335 (State Test Value minus Margin of Error Percent)
State Upper Limit: 21,554,491,001 (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