Scatter Plots and Trend Line Equations

Find the slope of the line.

• -5/4

• 5/4

• -4/5

• 4/5

the line on a scatter plot that help show the correlation between data sets more clearly

• y-intercept

• Trend line

• slope

• Scatter plot

a graph with points plotted to show a possible relationship between two sets of data

• Trend line

• scatter plot

• slope

• y intercept

a relationship between two variables in which the data do increase and decrease together at the same rate

• Linear association

• positive association

• No association

• negative association

a relationship between two variables in which the data do not increase or decrease together at the same rate

• linear association

• Positive association

• negative association

• non linear association

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 140 pages. 

• 12 chapters

• 19 chapters

• 14 chapters

• 21 chapters

Which line is the best line of best fit?

• a

• b

• c

• i don't see any lines

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

• A

• B

• C

• D

What type of correlation does this scatter plot show?

• positive

• negative

• no correlation

• nonlinear association

What type of association does this graph have?

• positive 

• negative

• none

• all of the above