Scatter Plots

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

• y=163.41x + 4.19

• y=-163.41x + 4.19

• y=-4.19x + 163.41

• y= 4.19x - 163.41
  

What is the correlation?

• Negative correlation

• No correlation

• Positive correlation

• All of the above

If a scatterplot has no association then...

• ...it has no ordered pairs

• ...it has ordered pairs that have a negative pattern

• ...its ordered pairs have no predictable pattern

• ...if it makes a lion on a graph (roar!)

A restaurant sells pizza for the prices in the data table.  Calculate the linear regression equation of the data.

• y = 1.5x + 12

• y = 12x + 1.5

• y = 0.67x - 8

• y = -8x + 0.67

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

What is the type of association?

• Negative 

• no association

• positive 

What type of association does this graph have?

• positive

• negative

• none

• all of the above

What type of association does this scatter plot represent?

• positive linear association

• negative association

• no association

• nonlinear association

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases

• As x increases, y increases

• As x decreases, y decreases

As the age of the car increases, its value decreases. Which scatterplot represents this relationship?

• A

• B

• C

• D