Consider the following (x, y) data. X -4 -3 -3 -2 -2 -1 -1 1. 3 3 4 y 0 -2.65 2.65 -3.46 3.46 -3.87 3.87 4-4 3.87 -3.87 3.46 -3.46 2.65 -2.65 0 (a) Calculate the correlation coefficient. Round your answer to 3 decimal places. (b) Is there linear relationship beetween x and y? 2. 2.

Annual high temperatures in a certain location have been tracked for several years. Let XX represent the year and YY the high temperature. Based on the data shown below, calculate the correlation coefficient (to three decimal places) between XX and YY. Use Excel! Just copy and paste the data into an Excel worksheet. r= x y 1 12.68 2 15.56 3 14.64 4 15.92 5 14.6 6 14.98 7 15.46

Annual high temperatures in a certain location have been tracked for several years. Let XX represent the year and YY the high temperature. Based on the data shown below, calculate the correlation coefficient (to three decimal places) between XX and YY. Use your calculator! x y 1 5.83 2 8.66 3 11.79 4 13.42 5 15.95 6 15.98 7 19.31 8 17.94 9 21.87 10 21.6 11 24.93 r=

Annual high temperatures in a certain location have been tracked for several years. Let XX represent the year and YY the high temperature. Based on the data shown below, calculate the correlation coefficient (to three decimal places) between XX and YY. Use your calculator! x y 4 20.48 5 19.1 6 23.52 7 23.34 8 23.56 9 23.98 r=

Calculate the Correlation Coefficient to 3 decimal places. x 2,  3,  4,  5,  6,  7,  8,  9,  10,  11,  12,  13,  14,  15 y 9.52,  11.68,  12.04,  11.4,  13.06,  14.32,  13.58,  17.54,  16.4,  20.06,  18.02,   19.28,  21.04,  22.4

Below is data for two variables, X and Y.  Answer the questions that follow.  X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 3 3 -2 -1 4 1 2 4 3 -1 -1 1 1 ___ 6 4 1 ___ 1 0 0 7 6 2 2 ___ 4 4   Positive or negative correlation?

Match the correlation coefficients with their scatterplots. Select the letter of the scatterplot below which corre- sponds to the correlation coefficient. (Click on image for a larger view.) ? 1. r= 0.76 ? 2. r=-0.74 ? 3. r= 0.22 ? 4. r= -0.97 A B C D

Which of the following best describes the Pearson correlation for these data? X Y 2 5 5 1 3 4 4 2

I need this as soon as possible please

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…