Question

Correlation .................. imply causation.

Which of the values cannot represent correlation? Select ALL that apply.

	-1.0001
	0.5
	0
	-1/3
	73

Do baseball teams that score more runs sell more tickets to their games? Identify response variable and predictor.

	Response (Y, dependent variable) = # Runs, Predictor (X,independent variable)= # Tickets
	Response (Y, dependent variable) = #Tickets, Predictor (X,independent variable)= # Runs
	Response (Y, independent variable) = # Runs, Predictor (X,dependent variable)= # Tickets
	Response (Y, independent variable) = #Tickets, Predictor (X,dependent variable)= # Runs

Scatterplot. Select all statements that are true about a scatterplot:

	A scatterplot can be used to detect if a response is normally distributed.
	A scatterplot is a graph of data from two categorical variables.
	A scatterplot cannot be used to detect the direction of linear association.
	A scatterplot is used for detecting patterns, strength of association, and influential points.
	A scatterplot is a graph of data from two continuous quantitative variables.

Answer 1

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1. Correlation DOES NOT imply causation.

2. Which of the values cannot represent correlation? Select ALL that apply.

Correlation ranges from -1 to 1 ( 0 included, and endpoints included)

-1.0001 - can't exist
0.5 - can exist
0 - can exist
-1/3 - can exist
73 - can't exist

3. Do baseball teams that score more runs sell more tickets to their games? Identify response variable and predictor.

Answer: Response (Y, dependent variable) = #Tickets, Predictor (X,independent variable)= # Runs

4. Scatterplot. Select all statements that are true about a scatterplot:

A scatterplot can be used to detect if a response is normally distributed - FALSE
A scatterplot is a graph of data from two categorical variables - FALSE, have to be between 2 continous variables
A scatterplot cannot be used to detect the direction of linear association - FALSE, they can.
A scatterplot is used for detecting patterns, strength of association, and influential points - TRUE
A scatterplot is a graph of data from two continuous quantitative variables - TRUE