taxes Property Tax Assistance

2018 Confidence Interval Detail

057/Dallas
057-910/Grand Prairie ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 1,059,713,840 0.9062 1,169,403,928 100 9157 0.035247347
A 1,060,205,920 0.9549 1,110,279,527 100 6702 0.011486691
A 1,058,809,310 0.9639 1,098,463,855 100 5421 0.007249845
A 1,059,394,200 0.9881 1,072,152,819 100 4019 0.004257069
B 112,492,900 0.9754 115,330,018 30 1148 0.004617973
B 75,946,760 0.8645 87,850,503 7 18 0.002859957
B 128,844,950 0.8684 148,370,509 4 12 0.013341813
F1 390,587,590 0.9169 425,987,120 10 565 0.008662762
F1 375,260,720 0.8809 425,996,958 9 96 0.021175694
F1 416,748,570 0.9140 455,961,236 7 33 0.023161372
F1 441,428,900 0.9664 456,776,594 6 16 0.000555239
L1 299,441,470 1.0331 289,847,517 11 361 0.002230057
L1 283,144,220 1.0240 276,508,027 9 50 0.011743403
L1 353,752,000 1.0071 351,258,068 7 21 0.000060943
L1 226,088,830 1.0034 225,322,733 5 6 0.000258823
Random Totals: 7,341,860,180 7,709,509,412 505 27,625
CATG B EXCEPTION VALUES: 93,854,100 111,975,433
CATG D1 EXCEPTION VALUES: 90,704 84,953
Total Test Values(2) 7,435,804,984 7,821,569,798

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 391,078,490

Confidence Interval Values(5)

Local Test Value: 7,435,804,984 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 7,430,491,308 (State Test Value minus Margin of Error Percent)
State Upper Limit: 8,212,648,288 (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