Skill 10: Line of Best Fit

Last updated almost 6 years ago

3 questions

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2

Bridget drew the trend line shown in the following scatter plot. Which statement best explains whether the trend line is a good fit for the data?

The trend line is a good fit for the data because the data represent a positive association, and the line has a positive slope.

The trend line is a good fit for the data because it passes through two of the data points.

The trend line is not a good fit for the data because there is an outlier.

The trend line is not a good fit for the data because most of the data points are below the trend line.

Through which pairs of points could a trend line be drawn that represents the data? Choose all that apply.

Three students are analyzing bean seedlings grown for a science experiment. The scatter plot shows the heights of the seedlings and the number of leaves on each plant. Each student draws a different trend line for the data.
• Kathy draws a line through points A and E.
• Calvin draws a line through points B and D.
• Deanna draws a line through points C and F.
Explain whether or not each student’s trend line represents the data.

Bridget drew the trend line shown in the following scatter plot. Which statement best explains whether the trend line is a good fit for the data?

The trend line is a good fit for the data because the data represent a positive association, and the line has a positive slope.

The trend line is a good fit for the data because it passes through two of the data points.

The trend line is not a good fit for the data because there is an outlier.

The trend line is not a good fit for the data because most of the data points are below the trend line.

Through which pairs of points could a trend line be drawn that represents the data? Choose all that apply.

points A and F

points B and G

points B and E

points D and G

points C and E

points E and G