taxes Property Tax Assistance

2016 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 816,708,150 1.0475 779,673,652 20 9,683 .017241171
A 816,878,070 0.9591 851,713,137 19 6,585 .006055572
A 816,233,970 0.9808 832,212,449 19 5,089 .004120602
A 816,164,360 0.9931 821,835,022 18 3,723 .003041450
B 79,549,560 1.0147 78,397,122 13 1,113 .001398332
B 78,596,280 0.7095 110,776,998 7 19 .111221656
B 55,823,390 0.6319 88,342,127 4 6 .057488208
F1 266,186,180 0.9393 283,387,821 10 539 .063768741
F1 307,082,450 0.9668 317,627,689 10 127 .022761243
F1 276,677,490 0.9429 293,432,485 9 32 .021649324
F1 367,655,110 0.9047 406,383,453 6 17 .000544972
L1 270,921,590 1.0239 264,597,705 10 416 .003051641
L1 303,335,780 0.9970 304,248,526 8 48 .001198337
L1 252,054,510 0.9955 253,193,882 5 12 .000035791
L1 231,282,270 1.0012 231,005,064 3 5 .000005750
Random Totals: 5,755,149,160   5,916,827,132 161 27,414  
Catg D1 Exception Values: 120,116   130,009      
Catg B Exception Values: 72,792,500   77,491,727      
Total Test Values (4): 5,828,061,776   5,994,448,868      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 299,722,443

Confidence Interval Values (5)

State Lower Limit: 5,694,726,425 (State Test Value minus Margin of Error Percent)
Local Test Value: 5,828,061,776 (Within Confidence Interval)
State Upper Limit: 6,294,171,311 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 5,598,276,295 (See ISD Summary Worksheet)

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, D3, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values
(6) Includes local value of unstudied property categories and sub-categories