Scatterplots and Outliers

Choose the best equation for the trend line shown.

How can you determine if the association on a scatter plot is strong or weak?

• By observing how large the y-intercept is.

• By observing how large the slope of the trend line is.

• By observing how closely the points of the scatter plot are located to one another.

• By observing whether or not the scatter plot is linear.

Give the ordered pair for the outlier in the given scatterplot.

Write the equation for the trend line

Which graph shows the best trend line for the scatter plot?

• Graph A

• Graph B

• Graph C

• Graph D

How can you determine if the association on a scatter plot is linear or nonlinear?

• By observing how large the y-intercept is.

• By observing how many points of data are on the scatterplot.

• By observing if the dot formation forms a line like pattern or not.

• By observing whether or not the scatter plot is strong.

Which is a true statement about the scatter plot data shown in the table?

• As the pages increase, the total words decrease

• As the pages decrease, the total words decrease

• As the pages increase, the total words increase

• Both B and C are TRUE

The scatterplot shows how many hours per week the debate team practices compared with the amount of debates won. Determine if the statement is True or False, if false correct the statement: There is a nonlinear negative association between the hours practiced and the number of wins.

• False. There is a nonlinear positive association between the hours practiced and the number of

• False. There is a linear positive association between the hours practiced and the number of wins.

• There is no association between the hours practiced and the number of wins.

• True.

Where is the outlier located in the scatterplot?

• 15

• 8 - 11

• 6-8

• 4

Where are the outliers located in the scatterplot?

• 212

• 212 and 215

• 188 - 192

• 192 - 200