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Wysłany: Śro 3:47, 09 Mar 2011 Temat postu: Exercise 18 |
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0.94well above the
ratio of 0.80 required to be within acceptable practice. As for which claim was sup-
ported by the courtGastwirth and Greenhouse (1995) report: “The lower court
accepted the defendant’s claim [using the selection ratio for those retained] but the
appellate opinionby Judge Cudahyr wholesale mbt shoesemanded the case for reconsideration.” The
judge also asked for further statistical informationto rule out chance as an explana-
tion for the difference.
The value of the chi-squared statistic for this case will be given as an exercise
(Exercise 1. Howevernotice that we must be careful in its interpretation. The peo-
ple in this study are not a random sample from a larger population; they are the only
employees of concern. There are othermore appropriate ways to test whether the
results could have been due to chancebut the chi-squared statistic is still a useful
measure of the strength of the relationship between ethnicity and work status.
Gastwirth and Greenhouse point out that this discrepancy could have been
avoided if the odds ratiohad been used instead of the selection ratio. The odds ratio
compares the odds of being laid off to the odds of being retained for each group.
Thereforethe plaintiffs and defendants could noyilai:
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