Correlation from Situations

• no correlation
• undefined correlation
• positive correlation
• negative correlation

Which of the following situations describes a negative correlation?

• the amount of gas left in a car's tank and the amount used from it

• the number of gallons purchased and the amount paid for it

• the size of a car's gas tank and the number of gallons it holds

• the number of miles driven and the amount of gas used

• y = x
• y = 2/3x + 1
• y = 3/2x + 4
• y = 3/2x + 1

• The linear regression of these data would have a correlation coefficient of zero.
• The linear regression of these data would have a correlation coefficient of one.
• The linear regression of these data would have a correlation coefficient of 0.85.
• The linear regression of these data would have a correlation coefficient of -0.85.

Determine the correlation coefficient of the given data.

• - .5477

• .1770

• .8956

• - .9463

• The linear regression of these data would have a correlation coefficient of zero.
• The linear regression of these data would have a correlation coefficient of +1.
• The linear regression of these data would have a correlation coefficient of -1.
• The linear regression of these data would have a correlation coefficient of -1.5.

• This residual plot represents a linear fit.
• This residual plot represents a nonlinear fit.
• This residual plot represents no fit.

Which lettered line represents the scatter plot's line of best fit?

• A

• B

• C

• D

Determine whether the situation describes a positive, negative or no correlation. The amount of flu shots given and the amount of people with the flu.

• Positive Correlation

• Negative Correlation

• No Correlation

Determine whether the situation describes a positive, negative or no correlation. The amount of coffee consumed and the number of t-shirts a person owns.

• Positive Correlation

• Negative Correlation

• No Correlation