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2007 Confidence Interval Detail
057/Dallas
057-903/Carrollton-Farmers Branch

Category Summary

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

Stratum
Variance
A 1,290,024,814 0.9860 1,308,341,596 42 10,382 .012466490
A 1,289,926,993 0.9878 1,305,858,466 54 8,165 .003719770
A 1,289,747,197 0.9828 1,312,319,085 53 6,121 .004307308
A 1,289,695,069 0.9829 1,312,132,535 51 3,791 .002054219
B 498,745,343 0.9411 529,959,986 7 70 .008124874
B 497,296,496 0.9472 525,017,416 6 37 .013730148
B 501,784,708 0.9952 504,204,891 5 24 .003425805
B 491,907,468 0.9527 516,329,871 6 15 .002825128
C 99,278,238 1.0224 97,103,128 7 531 .006794870
C 99,037,324 0.9452 104,779,226 7 98 .076420021
C 100,787,572 0.9517 105,902,671 6 45 .019305900
C 96,730,113 1.0115 95,630,364 5 16 .006100374
F1 1,105,246,218 0.8831 1,251,552,732 7 696 .044449882
F1 1,111,269,440 0.8797 1,263,236,831 7 242 .013283354
F1 1,106,675,281 0.9015 1,227,593,212 7 98 .021214289
F1 1,097,786,146 0.7752 1,416,132,799 7 36 .033804493
L1 523,165,024 1.1018 474,827,577 7 1,218 .015825836
L1 526,295,598 1.1722 448,981,060 7 192 .053470800
L1 525,742,235 1.0236 513,620,784 6 62 .062786350
L1 515,560,575 1.0091 510,911,282 6 14 .001548967
Random Totals: 14,056,701,852   14,824,435,512 303 31,853  
Catg D1 Exception Values: 6,695   4,828      
Total Test Values (4): 14,056,708,547   14,824,440,340      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 741,222,017

Confidence Interval Values (5)

Local Test Value: 14,056,708,547 (Outside Confidence Interval)
State Lower Limit: 14,083,218,323 (State Test Value minus Margin of Error Percent)
State Upper Limit: 15,565,662,357 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 14,087,940,135 (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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