taxes Property Tax Assistance

2024 Confidence Interval Detail

Dallas County
057-922/Coppell 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 1,846,103,270 0.9670 1,909,103,692 105 4,236 0.009057772
A 3 2,040,626,630 0.9624 2,120,351,860 80 3,525 0.008124195
A 4 2,888,779,010 0.9669 2,987,670,917 87 3,923 0.008517653
A 5 3,000,741,950 0.9836 3,050,774,654 76 2,923 0.005324211
B 2 262,618,150 1.0484 250,494,229 10 214 0.018150492
B 3 247,218,020 1.1506 214,860,090 4 6 0.000318444
B 4 219,094,020 1.1356 192,932,388 3 4 0.000041822
B 5 312,951,470 1.1020 283,985,000 3 4 0.011737652
F1 2 1,370,709,060 1.2318 1,112,769,167 10 248 0.056209743
F1 3 1,538,311,760 1.0215 1,505,934,175 10 108 0.009682886
F1 4 1,550,628,870 1.1079 1,399,610,858 9 54 0.020363516
F1 5 1,704,905,830 0.9803 1,739,167,428 8 31 0.030905975
L1 2 885,799,750 1.0087 878,159,760 11 393 0.001130154
L1 3 885,154,560 0.9892 894,818,601 10 71 0.006014365
L1 4 991,641,710 1.0175 974,586,447 8 25 0.001975798
L1 5 708,012,530 1.0118 699,755,416 5 6 0.005347403
Random Totals: 20,453,296,590 20,214,974,682 439 15,771
CATG D1 EXCEPTION VALUES: 127,742 107,741
Total Test Values 20,453,424,332 20,215,082,423

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,010,754,121

Confidence Interval Values(5)

Local Test Value: 20,453,424,332 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 19,204,328,302 (State Test Value minus Margin of Error Percent)
State Upper Limit: 21,225,836,544 (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