Which of the following sets of correlations is correctly ordered from highest to lowest degree (size) of relationship?       +0.83, +0.10, -0.91, -0.03       -0.91, +0.83, -0.03, -0.10       +0.83, +0.10, -0.03, -0.91       -0.91, +0.83, +0.10, -0.03

Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axes are the same for each diagram. (a) r= - (b) r= - 0.546 0.025 0.946 (c) r= - (d) r= - 1 Click the icon to view the scatter diagrams. ..... r= - 0.025 r= - 0.546 r= - 0.946 r= - 1 Drag each of the r-values given above into the appropriate area below. Explanatory Explanatory Explanatory Explanatory Response Response Response Response • .

Two variables are found to have a strong positive linear correlation. Pick the correct statement. An increase in one variable potentially causes a decrease in the other. An increase in one variable does not cause a decrease in the other. An increase in one variable does not cause an increase in the other. An increase in one variable potentially causes an increase in the other. An increase in one variable causes a decrease in the other. An increase in one variable causes an increase in the other.

Explain correlation and its importance.

Does a major league baseball team's record during spring training indicate how the team will play during the regular season? Over a six-year period, the correlation coefficient between a team's winning percentage in spring training and its winning percentage in the regular season is . Shown are the winning percentages for the American League teams during a season. Team SpringTraining RegularSeason   Team SpringTraining RegularSeason               Baltimore Orioles 0.409 0.424   Minnesota Twins 0.492 0.542 Boston Red Sox 0.426 0.588   New York Yankees 0.579 0.559 Chicago White Sox 0.411 0.535   Oakland A's 0.690 0.468 Cleveland Indians 0.578 0.492   Seattle Mariners 0.492 0.379 Detroit Tigers 0.578 0.459   Tampa Bay Rays 0.722 0.601 Kansas City Royals 0.540 0.461   Texas Rangers 0.640 0.491 Los Angeles Angels 0.724 0.619   Toronto Blue Jays 0.442 0.533   a. What is the correlation coefficient between the spring training and the regular season winning percentages…

Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. x 3 7 15 32 75 y 40 35 30 26 18 (a) Make a scatter diagram of the data and visualize the line you think best fits the data.  Flash Player version 10 or higher is required for this question. You can get Flash Player free from Adobe's website.   (b) Would you say the correlation is low, moderate, or strong? positive or negative? strong and negative moderate and negative   strong and positive low and negative low and positive moderate and positive (c) Use a calculator to verify that Σx = 132, Σx2 = 6932, Σy = 149, Σy2 = 4725, and Σxy = 2997. Compute r. (Round your answer to three decimal places.)r =  As x increases, does the value of r imply that y should tend to increase or decrease? Explain. Given our value of r, we cannot draw any conclusions for the behavior of y as x increases. Given our value of r, y should tend to…

What effect does an outlier have on a correlation coefficient? Would it increase, decrease or stay the same?

What are some of the possible reasons for large correlations betwen a pair of variables, X and Y?

A food truck owner recorded the temperature at noon, in degrees Fahrenheit, and the number of bowls of soup sold during the lunch hour for a random sample of 5 days. The data are shown in the following table. Temperature (degrees Fahrenheit) 57 75 43 68 67 Number sold 17 12 20 8 13 The mean temperature of the sample is 62 degrees Fahrenheit, and the mean number sold is 14. What is the correlation between the temperature and the number sold? A -0.85 B -0.68 0.68 D 0.73 E 0.85

Determine of whether strong correlation exisits as well as whether it is positive or negative