taxes Property Tax Assistance

2016 Confidence Interval Detail

057/Dallas
057-922/Coppell ISD

Category Summary

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

Stratum
Variance
A 1,167,846,860 0.9518 1,226,987,665 25 4,558 .005842180
A 1,167,601,390 0.9581 1,218,663,386 13 3,251 .001956099
A 1,167,487,000 1.0065 1,159,947,342 13 2,580 .001200717
A 1,167,350,570 0.9654 1,209,188,492 13 1,723 .013026026
B 101,403,160 0.9721 104,313,507 13 296 .001275390
B 67,346,190 0.9483 71,017,811 2 4 .001699830
F1 706,819,270 0.8301 851,486,893 14 208 .048720945
F1 703,542,590 0.9357 751,889,056 6 81 .011569238
F1 1,600,871,240 0.8937 1,791,284,816 15 71 .007774508
L1 600,936,210 1.0448 575,168,654 10 343 .069916677
L1 563,561,850 0.9877 570,579,984 9 55 .002611477
L1 611,028,590 0.9984 612,007,802 7 23 .006876827
L1 453,658,150 1.0016 452,933,456 4 8 .000006194
Random Totals: 10,079,453,070   10,595,468,864 144 13,201  
Catg D1 Exception Values: 140,696   139,524      
Catg B Exception Values: 268,145,120   287,374,155      
Total Test Values (4): 10,347,738,886   10,882,982,543      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 544,149,127

Confidence Interval Values (5)

State Lower Limit: 10,338,833,416 (State Test Value minus Margin of Error Percent)
Local Test Value: 10,347,738,886 (Within Confidence Interval)
State Upper Limit: 11,427,131,670 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 10,203,202,358 (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