Bivariate Statistics_2

The diagram shows a scatter plot of variable X and variable Y.

Estimate the correlation coefficient of the scatter plot.

• Non of above

State the type of correlation of the scatter plot above.

• positive linear relationship

• negative linear relationship

• positive nonlinear relationship

• negative nonlinear relationship

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

• Graph A
• Graph B
• Graph C
• Graph D

"As the age of the car increases, its value decreases."

Which of the following scatterplot represents this relationship?

• A

• B

• C

• D

• Non of above

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

• non of above

The diagram shows a scatter plot of prices and the number of TV.

Based on the scatter plot, estimate the correlation coefficient between the prices and the number of TV.

• non of above

• Strong positive linear relationship

• Weak positive linear relationship

• No negative linear relationship

• no significant linear relationship

The table shows the day and hours of a worker on duty in a ten days.

Determine the Correlation Coefficient of the day and hour.

• non of above

What type of correlation does this graph show?

• Strong Positive linear relationship

• Weak Negative linear relationship

• No significant linear relationship

• undetermined linear relationship

The table shows the temperature and the corresponding ice cream sales during the past two weeks.

Find the covariance and correlation coefficient between the temperature and ice cream sales.

Format of answer: (covariance); (correlation coefficient)

#put "-" (dash) for non used up spaces.