taxes Property Tax Assistance

2022 Confidence Interval Detail

Dallas County
057-922/Coppell ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 1,063,460,160 0.8898 1,195,167,633 93 3,121 0.022378274
A 1,349,943,880 0.9242 1,460,662,064 98 3,111 0.030604212
A 1,874,339,910 0.9238 2,028,945,562 103 3,499 0.016320577
A 3,678,922,460 0.9445 3,895,100,540 100 4,937 0.009929758
B 188,246,600 0.9726 193,549,866 10 314 0.006974928
B 138,385,160 1.1054 125,190,121 3 5 0.001429837
B 181,472,390 0.9611 188,823,149 4 7 0.007102525
B 197,906,900 1.0295 192,229,471 3 4 0.003322864
F1 1,081,775,450 0.9127 1,185,247,562 10 253 0.053459810
F1 1,243,105,290 0.9190 1,352,671,697 10 109 0.095465902
F1 1,146,626,040 1.0363 1,106,461,488 9 51 0.002314399
F1 1,376,905,200 1.0007 1,375,942,041 8 32 0.002655642
L1 793,814,790 1.0214 777,183,072 11 410 0.001239542
L1 688,088,070 1.0056 684,256,235 10 67 0.002405692
L1 642,280,660 1.0223 628,270,234 9 25 0.009924610
L1 714,921,990 0.9762 732,346,032 6 13 0.015734144
Random Totals: 16,360,194,950 17,122,046,767 487 15,958
CATG D1 EXCEPTION VALUES: 129,190 113,620
Total Test Values 16,360,324,140 17,122,160,387

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 856,108,019

Confidence Interval Values(5)

Local Test Value: 16,360,324,140 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 16,266,052,368 (State Test Value minus Margin of Error Percent)
State Upper Limit: 17,978,268,406 (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