Scatter Plots Best Line of Fit Linear Review

The scatter plot below shows John’s scores in the seven math and science chapter tests this semester. Which statement best describes the association between his math and science test scores?

• positive, linear, no outliers

• negative, linear, no outliers

• positive, linear, one outlier at (63, 99)

• negative, linear, one outlier at (99, 63)

• positive, linear, one outlier at (99, 63)

What is the line of best fit?

• y = 5/3x + 375

• y = 1/3x + 475

• y = 5/3x + 3

• y = 1/3x + 375

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

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 chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

What type of correlation does this scatter plot show?

• positive

• negative

• no correlation

• nonlinear association

Choose the graph with a trend line that best fits the data.

• graph 1

• graph 2

• graph 3

• graph 4

Mrs. Moises, the school counselor, keeps a candy jar in her office for students.  During one week, she kept count of how many students came to visit her and the number of candies in the jar, as show in the scatter plot.  Based on the trend line, what is the best prediction for the number of candies in the jar when 30 students visit her?

• 90

• 180

• 135

• 150

Is this line an accurate line estimate of best fit for the data?

• Yes

• No

What is the equation of the line of best fit

• y= -2x + 10

• y= 10x+ 2

• y= 10

Level 1: Determine the type of correlation.

• Positive

• Negative

• No Correlation