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2008 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 719,498,880 0.9970 721,663,872 42 6,064 .001953704
A 638,316,340 0.9845 648,366,013 45 4,015 .002435831
A 854,264,890 0.9804 871,343,217 50 3,961 .003335863
A 1,278,078,040 0.9575 1,334,807,352 49 3,640 .006495663
B 236,851,740 0.8734 271,183,581 6 38 .023125542
B 282,465,410 0.9812 287,877,507 6 21 .001787689
B 469,604,210 1.0451 449,339,020 5 22 .010194715
B 413,263,570 0.9999 413,304,900 5 12 .000028527
C 95,960,740 0.9716 98,765,685 7 617 .003035544
C 89,568,120 0.9052 98,948,431 7 85 .023293031
C 101,918,350 0.9916 102,781,716 6 40 .014477389
C 96,288,100 1.0259 93,857,199 5 14 .001519604
F1 1,006,832,050 0.8863 1,135,994,641 12 647 .022681785
F1 1,065,982,120 0.8667 1,229,932,064 12 230 .024736701
F1 1,088,429,600 0.9091 1,197,260,587 13 88 .015815024
F1 1,054,312,220 0.9174 1,149,239,394 6 34 .006451655
L1 510,228,090 1.0733 475,382,549 8 1,188 .011182121
L1 441,010,770 0.9023 488,762,906 7 166 .153414856
L1 504,019,950 1.0855 464,320,544 6 61 .023850849
L1 697,455,820 1.0511 663,548,492 4 14 .008825958
Random Totals: 11,644,349,010   12,196,679,670 301 20,957  
Catg D1 Exception Values: 12,491   10,543      
Total Test Values (4): 11,644,361,501   12,196,690,213      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 609,834,511

Confidence Interval Values (5)

State Lower Limit: 11,586,855,702 (State Test Value minus Margin of Error Percent)
Local Test Value: 11,644,361,501 (Within Confidence Interval)
State Upper Limit: 12,806,524,724 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 11,157,385,060 (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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