taxes Property Tax Assistance

2020 Confidence Interval Detail

Dallas County
057-912/Irving ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 1,211,767,640 0.9246 1,310,585,810 25 8,479 0.030783383
A 1,830,654,770 0.9864 1,855,894,941 31 9,671 0.023839443
A 2,183,494,170 0.9997 2,184,149,415 40 8,713 0.006831779
A 1,780,411,012 0.9829 1,811,385,708 26 3,385 0.007203552
B 618,794,730 0.8981 689,004,265 11 227 0.056124530
B 776,684,500 0.8475 916,441,888 9 49 0.011295948
B 629,061,320 0.9583 656,434,645 7 20 0.020111553
B 1,049,414,190 1.0381 1,010,898,940 6 17 0.001901300
C1 74,668,340 0.8981 83,140,341 10 1,309 0.087540899
C1 74,026,630 0.7020 105,451,040 10 177 0.314617263
C1 64,228,880 0.7404 86,748,892 8 30 0.722422165
C1 74,769,650 1.0464 71,454,176 4 7 0.051257937
F1 950,675,640 0.9349 1,016,874,147 10 880 0.006011696
F1 973,114,030 0.9281 1,048,501,271 10 176 0.008715609
F1 856,561,140 0.9131 938,080,320 9 37 0.002613599
F1 924,833,930 0.8931 1,035,532,337 6 12 0.068925331
L1 362,135,180 1.0125 357,664,375 11 970 0.004706651
L1 397,151,990 1.0341 384,055,691 10 163 0.006372032
L1 431,387,430 0.9708 444,362,824 10 50 0.002779401
L1 372,323,640 1.0050 370,471,284 5 7 0.000600723
Random Totals: 15,636,158,812 16,377,132,310 258 34,379
CATG D1 EXCEPTION VALUES: 97,554 95,372
CATG J EXCEPTION VALUES: 200,468,187 217,633,852
Total Test Values 15,836,724,553 16,594,861,534

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 829,743,077

Confidence Interval Values(5)

Local Test Value: 15,836,724,553 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 15,765,118,457 (State Test Value minus Margin of Error Percent)
State Upper Limit: 17,424,604,611 (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