زیرا ارادto1 A Math teacher Sees a correlation• test scores and homeworknoThe homework grade CX ? and thetest grade (y 2 is given in thetable use the results in thetable to find the line of bestFit for the dataпоместнияgraded 70 89 79 84 84 1016xTestgraded14 1765 6955 92 81 741

Homework, XTest score, Y7055899279818474847770656468

Answered: (1) A Math teacher Sees a correlation,…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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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…
[CLO-1] Find the median of the data set (1,2,3,6,11} 0 3 O 4.5 0 6 O 2
University of Nizura Find Karl Pearson's coefficient of correlation r: byx=-0.45,bry =-1.5 Select one: O A -0.45 O B.0.68 O C. 0.91 O D. -1.5 O E. None of these page
Please solve and circle your answers
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2:23 K On an international exam, students are asked to respond to a variety of background questions. For the 41 nations that participated in the exam, the correlation between the percentage of items answered in the background questionnaire (used as a proxy for student task persistence) and mean score on the exam was 0.889. Does this suggest there is a linear relation between student task persistence and achievement score? Write a sentence that explains what this result might mean. Click the icon to view the critical values table. OA. Yes, since |0.889| is less than the critical value for 30. B. Yes, since 0.889 is greater than the critical value for 30. OC. No, since |0.889 is greater than the critical value for 30. O D. No, since |0.889 is less than the critical value for 30. Does this suggest there is a linear relation between student task persistence and achievement score? Choose the best response below. Data table Critical Values for Correlation Coefficient ||| = Print n 3 0.997 4…
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Correlation
42
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What are the modes of this set of data
please do the rest

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(1) A Math teacher Sees a correlation, I no between test scores and homework The homework grade(x ? and the test grade (y) is given in the table use the results in table to find the line of best fit for the data the Thome coofist bu го graded 20 89 79 84 84 10 Test 55 92 81 14 171 65 69 graded