multiple choice questions for Objective 2

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Chapter 7

This activity contains 4 questions.

Which of the following is NOT a reasonable approach to developing a correlational research problem?

	Correlating two variables for which you've found some relationship discussed in the literature.
	Correlating 12 variables that make up a data set a colleague gave you.
	Attempting to understand the extent to which two variables discussed in the literature are related.
	Replicating the relationship found between two variables in a different population.

What is the minimal sample size for a correlational study?

	15
	30
	50
	100

What is the appropriate response to compensate for using a test with low validity and reliability as a criterion variable?

	Decrease the number of subjects
	Apply the Spearman Brown formula to correct the correlations
	Disregard the validity and reliability issues
	Increase the number of subjects

Smaller sample sizes than recommended can be used when

	the researcher expects no relationship between variables.
	there are only two variables to control.
	the instruments have low validity and reliability.
	the instruments have high validity and reliability.

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