Grade 8 | Unit 6 | Lesson 8: Analyzing Bivariate Data | Practice Problems

Different stores across the country sell a book for different prices. The table below shows the price of the book in dollars and the number of books sold at that price. Draw a scatter plot of this data. Label the axes.

Are there any outliers in the data? Explain your reasoning.

If there is a relationship between the variables, explain what it is.

Remove any outliers, and draw a line that you think is a good fit for the data.

Select all the following that describe the association in the scatter plot.

• Linear association

• Non-linear association

• Positive association

• Negative association

• No association

Using the data in the scatter plot, what can you tell about the slope of a good model?

• The slope is positive.

• The slope is zero.

• The slope is negative.

• There is no association.