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2010 Confidence Interval Detail
057/Dallas
057-903/Carrollton-Farmers Branch ISD

Category Summary

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

Stratum
Variance
A 818,520,330 1.0039 815,340,502 56 6,926 .012857955
A 889,289,460 0.9938 894,837,452 59 4,970 .005394093
A 914,760,140 0.9871 926,714,760 61 3,657 .002918038
A 926,224,340 0.9865 938,899,483 23 2,313 .001234902
B 388,833,110 0.9212 422,094,127 8 58 .010102014
B 353,610,220 0.9991 353,928,756 7 21 .004341809
B 274,981,200 0.8595 319,931,588 6 12 .009462699
B 199,827,990 0.9489 210,589,093 5 6 .006646355
C 89,048,360 0.9914 89,820,819 11 881 .120522294
C 90,056,830 1.0018 89,895,019 10 115 .000250730
C 77,577,630 1.0047 77,214,721 9 35 .006464202
C 86,800,270 1.0214 84,981,662 6 15 .000829826
F1 961,780,350 1.0020 959,860,629 11 658 .011688822
F1 896,132,690 0.9192 974,905,015 10 210 .032006279
F1 857,104,580 0.8646 991,330,766 9 83 .015352385
F1 840,610,010 0.8594 978,135,920 8 32 .009517950
L1 542,094,240 1.3012 416,611,005 10 1,053 .019889805
L1 517,636,310 1.1265 459,508,486 9 149 .066362749
L1 467,721,570 1.1071 422,474,546 8 35 .041941083
L1 397,203,290 1.0227 388,386,907 2 3 .006382816
Random Totals: 10,589,812,920   10,815,461,256 328 21,232  
Catg J Exception Values: 147,461,570   155,321,033      
Catg D1 Exception Values: 53,521   71,558      
Total Test Values (4): 10,737,328,011   10,970,853,847      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 548,542,692

Confidence Interval Values (5)

State Lower Limit: 10,422,311,155 (State Test Value minus Margin of Error Percent)
Local Test Value: 10,737,328,011 (Within Confidence Interval)
State Upper Limit: 11,519,396,539 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 10,373,540,586 (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

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