Lesson 8: Practice Problems
Problem 1
Different stores across the country sell a book for different prices. The table shows the price of the book in dollars and the number of books sold at that price.
price in dollars | number sold |
---|---|
Draw a scatter plot of this data. Label the axes.
Are there any outliers? 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.
Problem 2 From Unit 6 Lesson 7
Here is a scatter plot:
Select all the following that describe the association in the scatter plot:
Linear association
Non-linear association
Positive association
Negative association
No association
Problem 3 From Unit 6 Lesson 6
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.