Association Between Two Variables Scatter Plot

Scatter plots can help determine if one variable has an effect on the other, or if there are overall trends, patterns, or ​ (a)   between the variables.

• associations

• bivariate

• numerical

Which best describes the association shown in the scatter plot?

• Negative and linear

• Negative and nonlinear

• Positive and linear

• Positive and nonlinear

Scatter plot are graphs that use points to display​ (a)   data.

• numerical

• bivariate

• association

• categorical

Hector surveyed 500 people and asked them how far they drive to work and what the last digit of their phone number is. He used the results to make a scatter plot. What type of association should he expect to see in the scatter plot?

• Positive Association

• Negative Association

• No Association

The scatterplot shows the number of people in each of 8 different households and the average amount of money each household spent on groceries. Which statement best describes the association between the number of people in a household and the average amount of money spent on groceries?

• As the number of people in the household increases, the average amount of money spent on groceries decreases.

• As the number of people in the household increases, the average amount of money spent on groceries increases.

• As the number of people in the household decreases, the average amount of money spent on groceries increases.

• There is no apparent association between the number of people in the household and the average amount of money spent on groceries.

Phil collected data from several of his friends about the number of hours they spent sleeping and the number of hours they spent playing video games on Saturday. He recorded the data in the scatterplot. Which statement best describes the association between the number of hours they spent sleeping and the number of hours they spent playing video games?

• As the number of hours of sleeping increases, the number of hours playing video games increases.

• As the number of hours of sleeping decreases, the number of hours playing video games decreases.

• As the number of hours of sleeping decreases, the number of hours playing video games increases.

• There is no apparent association between the number of hours of sleeping and the number of hour playing video games.

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase. 

• As the temperature increases, the number of visitors increases. 

• As the visitors increase, the temperature decreases. 

• No correlation

What relationship is shown in the scatter plot?

• As the cost goes down, the number sold goes down.

• As the cost goes up, the number sold goes down.

• As the cost goes down, the number sold remains the same.

• There is not relationship between cost and the number sold.

What association would you expect between the two variables?

• Positive Association

  As the first variable increases, the second variable increases

• Negative Association

  As the first variable increases, the second variable decreases

• No Association

  The first variable has no effect on the second variable

What association would you expect between the two variables?

• Positive Association

  As the first variable increases, the second variable increases

• Negative Association

  As the first variable increases, the second variable decreases

• No Association

  The first variable has no effect on the second variable