Scatterplots Line of Fit

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?

• 65

• 92

• 70

• 76

What is the equation of the line of best fit?

• y = 3/2x

• y = 30x

• y = 30x + 300

• y = 3/2x + 300

For which scatter plot would the line of best fit be represented by the equation y = ½x + 2?

• Graph A

• Graph B

• Graph C

• Graph D

Which describes the scatterplot?

• As speed increases distance decreases.

• As speed increases, distance increases.

• As speed decreases distance increases.

What type of correlation does this scatter plot show?

• positive 

• negative

• no correlation

• nonlinear association

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

• A

• B

• C

• D

Which of the following could be a possible line of best fit for the data?

• y = -5/2x + 20

• y = -x + 19

• y = x + 20

• y = 2/3x + 15

Suppose a LINE OF BEST FIT passes through the points (6, 34) and (8, 50). The EQUATION of this line is . . .? (hint: find the slope and the equation in point-slope form. THEN put it into slope-intercept form)

• y = 8x – 5

• y = 2x

• y = 2x + 7

• y = 8x – 14

In the scatter plot, does the image shows a "Line of Best Fit"?

• Yes

• No

In the scatter plot, does the image shows a "Line of Best Fit"?

• Yes

• No