Scatter Plots and Lines of Fit

Based on the slope, y-intercept and correlation, which equation is the line of best fit? (Is the slope positive or negative? Where is it crossing the y-axis?)

• y = -25x + 170

• y = 25x + 120

• y = -25x + 40

• y = 25x + 60

Tell whether x and y show a positive, a negative, or no correlation.

• Positive correlation

• Negative correlation

• No correlation

Find the slope for the trend line using points (2,2) and (4,3)

• 2

• 1/2

• -2

• -1/2

Tags

CCSS.8.EE.B.5

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.

Tags

CCSS.8.EE.B.5

What is a scatter plot?

• A graph that shows the relationship between two data sets.

• A graph drawn using rectangular bars to show how large each value is.

• A graph that shows information that is connected in some way.

• A graph that shows data changing over time.

Which scatter plot shows a negative relationship?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

CCSS.HSA.REI.D.12

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

• Yes

• No

Tags

CCSS.8.EE.B.5

The equation of the trend line
is  y= 1/2x +1. Use the equation to determine the amount of time it would take to bike 20 laps. 
*Look at the x and y axis first before starting the problem

• 38 minutes

• 11 minutes

• 41 minutes

• 10 minutes

Tell whether x and y show a positive, a negative, or no correlation.

• Positive correlation

• Negative correlation

• No correlation

What is the correlation?

• Negative correlation

• No correlation

• Positive correlation

• All of the above