Scatterplots and Line of Best Fit

What is the equation of the line of best fit?

• y = -25x + 170

• y = -5/8x + 170

• y = 25x + 170

• y = 5/8x + 170

The table shown is comparing a person's foot length to their height in cm. What might the height of a person be with a foot length of 30 cm?

• 185 cm

• 180 cm

• 190 cm

• 192 cm

What type of association does this graph have?

• positive

• negative

• none

• all of the above

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

• A

• B

• C

• There is no line of best fit for this graph

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

• A

• B

• C

• D

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

• A

• B

• C

• D

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase. 

• As the temperature increases, the number of visitors increases. 

• As the visitors increase, the temperature decreases. 

• No correlation

The equation of the trend line is y= 1/2x +1
How many laps can a bicycle make around the park in 23 minutes?

• 44 laps

• 12 1/2 laps

• 23 laps

Select the statement that best describes the line.

• The line is the line of best fit.

• The line is NOT a line of best fit because it does not pass through two points.

• The line is NOT a line of best fit because it does not go through the middle of the data set.

• The line is NOT a line of best fit because it does not go through the origin.

Predict the grade of a student that has 7 absences.

• 50

• 45

• 70

• 60