Please use the accompanying Excel data set or accompanying Text file data set when completing the following exercise.Consider the following (x, y) data.-1 00-4-3-3-2-2-11134y0 -2.65 2.65 -3.463.46-3.873.874-43.87-3.873.46-3.46 2.65-2.65(a) Calculate the correlation coefficient. Round your answer to 3 decimal places.r = i(b) Is there linear relationship beetween x and y?3.2.2.

Answered: Consider the following (x, y) data. X…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The data below is 12 observations of Fall semester student credit hours (x) and Spring semester student credit hours (y). Calculate the linear correlation coefficient, rr. Enter your answers to two decimal places. Xhours Yhours 6 3 11 15 16 13 12 16 7 9 10 7 8 4 15 18 13 17 9 5 5 4 14 17 rr =
Compute the linear correlation coefficient for the data below, rounding to three decimal places. - 10 - 1 X y - 11 - 3 A. 0.792 B. 0.990 C. 0.819 O D. 0.881 -9 -1 -2 16 -5 8 -7 5 -8 -6 1 6 -4 10 - 3 13
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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=
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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
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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…

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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.