Scatterplots and Outliers

Describe the strength and direction of the trend

• Weak Negative Trend

• Strong Negative Trend

• Weak Positive Trend

• Strong Positive Trend

Which scatter plot shows both positive and linear association?

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What is a scatterplot?

Choose the best definition.

• A graph with a bunch of dots.

• A graph that has points plotted that form a linear relationship

• A display of points that shows the relationship between two sets of data.

• A nonlinear graph.

What type of relationship exists between the amount of money earned and the number of bottles collected? Chose the best answer

• Positive linear association

• negative linear association

• no association

• nonlinear association

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

• The more books students read, the lower their English grade.

• The more books students read, the higher their English grade.

• The fewer books students read, the higher their English grade. 

• No relationship exists between the number of books students read and their English grades. 

Which trend line is the best model for the data?

• Line A

• Line B

• Line C

• None of the above

Describe the relationship between the variables.

• There is no relationship between the variables

• As the age increases, the height increases

• As the age increases, the height decreases

• As the height decreases, the age decreases

How would you describe a strong association?

• There is not enough evidence to tell.

• The two data sets provide plenty of data.

• The data points are closely clustered around the trend line on the scatterplot.

• There are several outliers.

What type of relationship exists between the admission price and the number of visitors? Chose the best answer

• Positive linear association

• negative linear association

• no association

• nonlinear association

Which scatter plot shows a linear association between x and y?

• Graph A

• Graph B

• Graph C

• Graph D