Linear Correlation

Which of the following best describes the correlation shown on the graph?

• negative correlation

• positive correlation

• no correlation

Which of the following best describes the correlation shown on the graph?

• negative correlation

• positive correlation

• no correlation

Which correlation coefficient (r) best represents the graph?

• r = -0.95

• r = 0

• r = 2

• r = 1

Which correlation coefficient (r) best represents the graph?

• r = -0.95

• r = 0

• r = 0.85

• r = 1.1

Which correlation coefficient (r) best represents the graph?

• r = -0.95

• r = 0

• r = 0.85

• r = 1.1

Estimate the correlation coefficient for this scatterplot.

• r = 0.56

• r = -0.56

• r = 0.92

• r = -0.92

Describe the correlation in the graph shown.

• Strong Negative

• Strong Positive

• Weak Negative

• Weak Positive

Which of the following statements are supported by the scatterplot?
I.  There is a positive association between height and volume.
II.  There is an outlier in the plot. 
III.As the height of a cherry tree increases, the volume of useable lumber it yields increases.

• I only

• II only

• I and II only

• I, II, and III

A person travels by car.  They record their miles driven in a data table.  Calculate the linear regression equation of this data.

• y = 61.93x - 1.79

• y = -1.79x + 61.93

• y = 0.016x + 0.03

• y = 0.03x + 0.016

What type of correlation does this graph have?

• Positive correlation

• Negative correlation

• No correlation

• Constant correlation