07. Quizzes On Scatter Plots

Check Your Scatterplot Skills

Use the scatterplot between Temp and Sales to solve the matching quiz.

Download Data

QUIZ QUESTION::

Match each term to the description that applies for the above scatterplot.

ANSWER CHOICES:

Positive (Direct)

Close to 1

Weak

Moderate

Negative (Indirect)

Close to -1

Close to 0

Strong

Term	Description
Strength
Direction
Correlation Coefficient

SOLUTION:

Term	Description
Direction	Positive (Direct)
Correlation Coefficient	Close to 1
Strength	Strong

Check Your Scatterplot Skills (Part II)

Use the scatterplot between car weight and miles per gallon to solve the matching quiz. Again, you can download the data here.

QUIZ QUESTION::

Match each term to the description that applies for the above scatterplot.

ANSWER CHOICES:

Positive (Direct)

Moderate

Negative (Indirect)

0

Strong

Weak

0.67

-0.67

Term	Description
Strength
Direction
Correlation Coefficient

SOLUTION:

Term	Description
Strength	Moderate
Direction	Negative (Indirect)
Correlation Coefficient	-0.67

Check Your Scatterplot Skills (Part III)

Use the scatterplots for the three datasets below to answer the following quiz. Again, you can download the data here.

QUIZ QUESTION::

For the above scatterplots, match the plot to the corresponding correlation coefficient.

ANSWER CHOICES:

0.0

-1.0

1.0

-0.5

0.5

Both 1.0 and -1.0

1.0

-1.0

Scatter plot	Correlation Coefficient (r) Value
Plot 1
Plot 2
Plot 3

SOLUTION:

Scatter plot	Correlation Coefficient (r) Value
Plot 3	0.0
Plot 2	-1.0
Plot 1	1.0
Plot 1	1.0
Plot 2	-1.0