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comparison of correlations

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Question

8. Why should researchers be very cautious about comparison of correlations that involve different

variables?

 
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relationship between statistical significance and clinical significance

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Question

Which is true about the relationship between statistical significance and clinical significance?a)

statistical significance shows that there is also clinical significance

b) statistical significance increases the probably that there will be clinical significance

c) statistical significance decreases the probably that there will be clinical significance

d) statistical significance does not guarantee clinical significance

 
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At what point in the research process should the nominal alpha level be set?

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Question

At what point in the research process should the nominal alpha level be set?a) before a study is

proposed

b) before the results are written

c) before data are collected

d) before data are analyzed

 
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When should researchers reject the null hypothesis?

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Question

When should researchers reject the null hypothesis?
a) if the population mean and the sample

mean are not the same

b) if the test statistic is less than 5

c) if the values seem different to an expert

d) if the probability of obtaining the results by chance is lower than the nominal alpha level

 
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