Scatterplot and Line of Fit Review

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 19 chapters. 

• 150 pages

• 170 pages

• 190 pages

• 210 pages

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. 

Tags

CCSS.HSF.LE.B.5

440 turtles

40 turtles

150 turtles

90 turtles

• 440 turtles

• 40 turtles

• 150 turtles

• 90 turtles

Tags

CCSS.8.F.A.3

Is the line a good fit for the data in the scatterplot?

• There are an equal number of data points above and below the line, so the line is a good fit.

• There are an equal number of data points above and below the line, but the line does not follow the trend, so it is not a good fit.

• There is no relationship between x and y, so the line is not a good fit.

• There is a non-linear association between the x and y values, so the line is not a good fit.

• A

• B

• C

• D

Take a look at the scatter plot and line of best fit. Is the line of best fit correct? Why or why not?

• No, while the line does cross through some points, it does not follow the slope of the data.

• Yes, there are approximately the same points above and below the line.

• No, not enough points are plotted to determine if this is an accurate line.

• Yes, the line trends closely with the observed data.

Tags

CCSS.8.EE.B.5

Which equation best represents the data?

•  y = 3/4x + 1

•  y = 4/3x - 1

•  y = -3/4x - 1

•  y = -4/3x - 1