A Correlation

What type of association does this graph have?

• positive

• negative

• none

• all of the above

Estimate the correlation coefficient for this scatterplot.

• r = -0.9

• r = 1

• r = 0.9

• r = -1

What type of correlation does this scatter plot show?

• Positive correlation

• Negative correlation

• No correlation

• Constant correlation

What does a scatter plot with points closely following an upward sloping line indicate about the relationship between the two variables being plotted?

• No correlation

• Negative correlation

• Positive correlation

• Constant correlation

What is the line of best fit in a scatter plot primarily used for?

• To separate different groups of data

• To predict the value of one variable based on the value of another

• To calculate the exact values of all data points

• To create a boundary around all data points

As shown in the table, a person's target heart rate during exercise changes as the person gets older. Find the correlation coefficient (r).

• -0.999

• -0.664

• 0.998

• 1.503

Determine the correlation coefficient of the given data.

• - .5477

• .1770

• .8956

• - .9463

Calculate the Correlation Coefficient of the following table.

• r= -0.01 no correlation

• r= -0.01 weak positive

• r= -0.01 weak negative

• r= 3.71 strong positive

Calculate the correlation coefficient for the given table.

• r= 0.90 strong positive

• r= -0.90 strong negative

• r= 0.81 strong positive

• r= -0.81 strong negative

What is the correlation for the following Scatter Plot.

• Weak Positive

• No Correlation

• Strong Negative

• Weak Negative

• Strong Positive