Scatterplots

Front

The police department tracked the number of ticket writers and number of tickets issued for the past 8 weeks. The scatter plot shows the results. Which statement is true?

Back

More ticket writers results in more tickets issued.

Front

This scatterplot could show the relationship between which two variables? Options: speed of an airplane (x) vs. distance traveled in one hour (y), outside air temperature (x) vs. air-conditioning costs (y), age of an adult (x) vs. height of an adult (y), distance traveled (x) vs. gas remaining in the tank (y)

Back

distance traveled (x) vs. gas remaining in the tank (y)

Front

Explanatory variable in the relationship between seeds planted and fruit grown.

Back

The number of seeds planted

Front

Which of the following is true?

• We use the response variable to explain changes that might be observed in the explanatory variable.
• The explanatory variable is the variable we expect to be explained by the response variable.
• The response variable is also known as the predictor variable.
• The explanatory variable is used to explain or predict the value of the response variable.

Back

The explanatory variable is used to explain or predict the value of the response variable.

Front

What is the response variable (RV) when investigating the relationship between time spent shopping and the number of items bought?

Back

The number of items bought

Front

Is there a correlation between the two variables? If so, is it strong or weak?

Back

Yes Correlation. Strong.

Front

What does it mean to have a negative correlation?

Back

Your response variable decreases as your explanatory variable increases

Front

What type of relationship does this graph show? Options: Positive, Negative, No Relationship, Constant

Back

No Relationship

Front

Predict the number of chapters in a book with 180 pages using the trend line from a scatter plot showing the relationship between chapters and pages.

Back

18 chapters

Front

Based on this scatterplot, approximate what score should a student who attended class 22 days expect to receive on the exam?

Back

84