A. Answer the following question: 1. Which of the following may be used to exami

Question

A. Answer the following question:

1. Which of the following may be used to examine if two variables are related?
a. Scatterplots
b. Stratified Analyses
c. Correlation
d. All the above

2. Scatterplots may be used for which of the following? (Mark all that apply)
a. To examine if percentages for categories differ between strata
b. To examine if two continuous variables are linearly related
c. To examine if two continuous variables are related
d. To examine if there are outliers in the data

3. Which of the following statements are true? (Mark all that apply)
a. If two continuous variables are not linearly related, they are not related
b. The Pearson correlation coefficient may be greater than 1 if two variables are not related
c. Stratified analyses may be used to see if the mean for a continuous variable differ between categories.
d. The slope of a regression equation measures how much the dependent variable changes for a one unit change in the independent variable
e. None of the above

4. Which of the following are true about Exploratory Data Analysis? (Mark all that apply)
a. May be used to see if there are potential outliers
b. Uses histograms to examine the distributions of continuous data
c. Examines the relationships between variables
d. Uses both analytic and graphical methods for exploring data

Explanation / Answer

Answers:

1. Scatterplots

2. To examine if two continuous variables are related

3. he slope of a regression equation measures how much the dependent variable changes for a one unit change in the independent variable

4. Uses both analytic and graphical methods for exploring data

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