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2009 Confidence Interval Detail
057/Dallas
057-906/DeSoto ISD

Category Summary

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

Stratum
Variance
A 501,767,210 1.0320 486,208,537 25 4,988 .010443659
A 445,519,700 1.0766 413,821,011 25 3,508 .025274555
A 406,945,430 1.0197 399,083,485 24 2,545 .008129318
A 354,619,790 1.0634 333,477,327 25 1,451 .015279143
B 26,646,510 1.0563 25,226,271 6 307 .005123620
B 35,084,630 1.1954 29,349,699 9 241 .041752210
B 38,537,820 0.9580 40,227,370 5 16 .005939890
B 45,505,280 0.9905 45,941,726 2 4 .002084620
F1 59,049,320 0.9037 65,341,728 8 161 .058752302
F1 61,353,730 0.8852 69,310,585 6 43 .007326394
F1 42,560,840 0.8982 47,384,591 5 14 .015126567
F1 46,621,350 0.9406 49,565,543 3 6 .004869830
Random Totals: 2,064,211,610   2,004,937,873 143 13,284  
Catg D1 Exception Values: 227,873   211,587      
Total Test Values (4): 2,064,439,483   2,005,149,460      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 100,257,473

Confidence Interval Values (5)

State Lower Limit: 1,904,891,987 (State Test Value minus Margin of Error Percent)
Local Test Value: 2,064,439,483 (Within Confidence Interval)
State Upper Limit: 2,105,406,933 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,202,748,634 (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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