Line of Best Fit Scatterplots

What is the relationship between test scores and hours of sleep shown in this graph?

• undefined association

• positive association

• negative association

• no association

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 

Based on the line of best fit for the scatter plot, which of the following amounts is closest to the cost of a 120-minute phone call?

• $10

• $12

• $15

• $20

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

Tags

CCSS.8.EE.B.5

What type of correlation does this scatter plot show?

• positive 

• negative

• no correlation

• nonlinear association

What is the equation of the line of best fit?

• y = 3/2x

• y = 30x

• y = 30x + 300

• y = 3/2x + 300

Which describes the scatterplot?

• As speed increases distance decreases.

• As speed increases, distance increases.

• As speed decreases distance increases.

Do the following data show a positive correlation, negative correlation, or no correlation?

• positive correlation

• negative correlation

• no correlation

About how many male math teachers were there in 2006?

• 15

• 30

• 35

• 45

Tags

CCSS.HSF.IF.B.4

Suppose the equation of the line of best fit for the scatterplot is y=-25x+170 Use the information to predict the remaining distance, when the bicyclist has traveled 3 hours.

• 95 km

• 98 km

• 2 hours

• Not enough information.

Tags

CCSS.HSF.LE.B.5