2.Correlational studies allow the researcher to: a) make causal inferences about

ID: 3046652 • Letter: 2

Question

2.Correlational studies allow the researcher to:

a) make causal inferences about the relationship between two variables.

b)test for group mean differences on two variables.

c)identify the nature and strength of relationship between two variables.

d)predict the effect of one variable upon another.

3.Which of the following tests would you use to assess the relationship between two ordinal variables?

a)Spearman's rank correlation

b)Point-biserial correlation

c)Phi correlation

d)Pearson’s product-moment correlation

4 Which of the following tests would you use to explore the relationship between two continuous variables?

a)Phi correlation

b)Pearson’s product-moment correlation

c)Point-biserial correlation

d)Spearman's rank correlation

5. A scatterplot shows:

a)Scores on one categorical variable plotted against scores on a second continuous variable.

b)The average value of groups of data.

c)Scores on one continuous variable plotted against scores on a second continuous variable.

d)The proportion of data falling into different categories.

6. The correlation coefficient between variables A and B is .12 with a significance of p < .01. What can we conclude?

a)There is a weak, positive, and statistically significant relationship between A and B. The null hypothesis should be rejected.

b)There is a strong, positive, and statistically significant relationship between A and B. The null hypothesis should be rejected.

c)Variable A causes variable B.

d)There is a weak, positive, but not statistically significant relationship between A and B. The null hypothesis should be rejected.