3.8 Scatter Plots

What kind of association does the scatter plot show?

• Positive

• Negative

• No association

What kind of association does the scatter plot show?

• Positive

• Negative

• No association

What kind of association does the scatter plot show?

• Positive

• Negative

• No association

What kind of association does the scatter plot show?

• Positive

• Negative

• No association

What are the two variables being compared in this scatter plot?

• Yogurt

• Temperature

• Sales

Answer explanation

To find the variables, look on the x-axis and the y-axis.

Temperature is x and sales is y!

What happens to sales as temperatures increase?

• Sales decrease.

• Sales do not change.

• Sales increase.

According to the scatter plot, how many students took the history test?

(Hint: Count the data points.)

• 45

• 13

• 9

The number of siblings you have and your weight. 

• Positive correlation

• Negative correlation

• No correlation

• All of the above

Find the equation of the line of best fit for the given data

• y = 163.41x+1.49

• y =- 163.41x+ 4.19

• y =- 4.19x+163.41

• y = 4.19x -163.41

Write the linear regression equation for the following data points. Round to the nearest hundredth.