Is it possible to determine the correlation between a nominal variable and one with ratio scaling?
a. no c. yes, but it is meaningless
b. yes, but not with the Pearson r d. yes, but it represents a computer error
B
There are other procedures for calculating correlations between nominally scaled variables and those measured on ratio scales, but those procedures are not covered by this textbook.
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Selective deprivation of NREM sleep produces complaints of
A. lack of concentration. B. inability to retain information. C. joint and muscle pain. D. depression.
Which of the following is not covered in the workers' compensation system?
A. Physical and psychological injuries suffered at work B. Cost of treatment C. The loss of future earning capacity D. The lawyer's fee
Which one of the following statements about validity is FALSE?
A. Evidence of validity based on a test’s relations with other variables involves correlating test scores to a measure of performance or another test. B. Evidence of validity based on content involves examining the questions on the test to see whether they represent the domain being measured. C. Evidence of validity based on content involves correlating test scores to a criterion. D. Evidence of validity based on a test’s relations with a criterion can be gathered via the concurrent and predictive methods.
Explain how regular moderate exercise in middle age confers psychological benefits.
What will be an ideal response?