1
Research Methods and Statistics
Questions and Correct Answers
Which of the following is not a type of nonrandom sampling?
Ans✅✅: cluster sampling
When test scores represent an interval or ratio scale and the distribution of
scores is skewed, the best measure of central tendency for the distribution is
usually which of the following?
Ans✅✅: median
The internal validity of a research study is threatened by statistical regression
when:
Ans✅✅: participants were chosen for inclusion in the study because
they obtained extremely low scores on a pretest.
Community-based participatory research (CBPR) is best described as a type of:
Ans✅✅: action research
In the context of research, between-methods triangulation involves:
Ans✅✅: including both qualitative and quantitative methods to collect
data.
Multicollinearity occurs when:
Ans✅✅: scores on one or more explanatory variables are highly
correlated with scores on one or more of the other explanatory variables
To measure the degree of association between high school diploma (yes or no)
and yearly income in dollars, you would use which of the following correlation
coefficients?
Pretest - Stuvia US
Research Methods and Statistics
Questions and Correct Answers
Which of the following is not a type of nonrandom sampling?
Ans✅✅: cluster sampling
When test scores represent an interval or ratio scale and the distribution of
scores is skewed, the best measure of central tendency for the distribution is
usually which of the following?
Ans✅✅: median
The internal validity of a research study is threatened by statistical regression
when:
Ans✅✅: participants were chosen for inclusion in the study because
they obtained extremely low scores on a pretest.
Community-based participatory research (CBPR) is best described as a type of:
Ans✅✅: action research
In the context of research, between-methods triangulation involves:
Ans✅✅: including both qualitative and quantitative methods to collect
data.
Multicollinearity occurs when:
Ans✅✅: scores on one or more explanatory variables are highly
correlated with scores on one or more of the other explanatory variables
To measure the degree of association between high school diploma (yes or no)
and yearly income in dollars, you would use which of the following correlation
coefficients?
Pretest - Stuvia US
