Correlation and Regression-2

State the correlation between number of hours spent in the mall and amount of money spent

• Positive Correlation

• Negative Correlation

• No Correlation

State the correlation between temperature and number of people wearing jackets

• Positive Correlation

• Negative Correlation

• No Correlation

Describe the correlation in the graph shown.

• A) Strong Negative

• B) Strong Positive

• C) Weak Negative

• D) No Correlation

Estimate the correlation coefficient for this scatterplot.

• A) r = -0.9

• B) r = 1

• C) r = 0.9

• D) r = -1

The table shown is comparing a person's foot length to their height in cm. Calculate a line of best fit.

• y = 25.05 + 5.57x

• y = 5.57 + 25.05x

• y = -5.57 + 25.05x

• y = 5.57 - 25.05x

The value of the linear correlation coefficient is zero if the points in a scatter diagram

• lie on an upward sloping line

• lie on a downward sloping line

• are scattered all over the diagram

• are close to the regression line

What graph best shows correlation? 

• Bar Graph
  
• Histogram
• Ogive
• Scatterplot

What would the correlation be between math grades and the time it takes to run a mile ?

• Postive Correlation
• Negative Correlation
• No Correlation
• Cannot Be Determined

Base your answer to the following question on the information in the table above composed by a school dean, as he tried to determine if there was a correlation between amount of detentions and GPA.
What is the correlation coefficient of this data? 

• –0.6921 
• –0.2031
• 0.3191
• –0.4016

Based on the table, which function can best be used to model this situation?

• h(t) = 99t² + 858

• h(t) = -4.9t² + 295t + 0.6

• h(t) = -4.9t² + 295t + 2

• h(t) = 99t² + 1,470.3