taxes Property Tax Assistance

2016 Confidence Interval Detail

057/Dallas
057-907/Duncanville ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 604,867,030 0.9570 632,044,963 11 6,326 .016142796
A 604,699,390 0.9818 615,908,933 15 4,624 .010487483
A 604,837,640 0.9970 606,657,613 20 3,551 .003654595
A 604,513,080 1.0508 575,288,428 14 2,414 .005036370
B 59,635,660 0.6821 87,429,497 11 207 .012594719
B 41,913,770 0.7157 58,563,323 6 7 .033145221
B 45,656,910 0.7883 57,918,191 4 6 .023250723
B 96,712,700 0.8644 111,884,197 3 9 .038908168
F1 161,765,580 0.9496 170,351,285 12 398 .006762361
F1 157,043,020 0.8593 182,756,918 11 134 .010112809
F1 165,937,930 0.7796 212,850,090 10 60 .023212443
F1 182,866,180 0.8591 212,857,851 8 24 .010024894
L1 78,064,790 1.0416 74,946,995 10 343 .015949561
L1 85,722,970 1.0171 84,281,752 9 62 .003310436
L1 82,370,770 0.9971 82,610,340 6 15 .000178192
L1 76,498,670 1.0027 76,292,680 3 6 .000038210
Random Totals: 3,653,106,090   3,842,643,056 153 18,186  
Catg D1 Exception Values: 82,954   85,827      
Total Test Values (4): 3,653,189,044   3,842,728,883      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 192,136,444

Confidence Interval Values (5)

State Lower Limit: 3,650,592,439 (State Test Value minus Margin of Error Percent)
Local Test Value: 3,653,189,044 (Within Confidence Interval)
State Upper Limit: 4,034,865,327 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,815,840,148 (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