::::20. Ten students were given tests in English and Mathematics. Their marks are given below :Student No.12356810Marks in English78405055524969545958Marks in Mathematics70606075695570656560Determine Spearman's rank correlation coefficient.

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Answered: 20. Ten students were given tests in…

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 following table gives the marks obtained by a student in ten tests during the year. Calculate the correlation coefficient. Test No. : 1 2 3 4 5 6 7 8 10 Marks in Accounts : 77 54 27 52 14 35 90 25 56 60 Marks in English : 35 58 60 40 50 40 35 56 34 42
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6. Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take both tests and the results are given below. (x)TestA 48 52 58 44 43 43 40 51 59 (y)TestB| 73 67 73 59 58 56 58 64 74 a. Plot the scatter diagram below. Label x and y axes. Do a rough sketch. b. Find the value of the linear correlation coefficient r by the TI83 shortcut- state calculator screen name c) Test the claim of no linear relation by the TI83 p-value method. a .05 claim null hypothesis. alternative hypothesis... Calculator Screen Name..... test statistic pvalue/alpha comparison.….... decision Conclusion d) Find the estimated equation of the regression line by T183 shortcut e) Plot the regression line on the scatter diagram in part a). f) Assuming a significant linear correlation, predict the score a student would get on Test B, given he got a 90 on Test A. g) What percentage of the total variation can be explained by the regression line
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20. Ten students were given tests in English and Mathematics. Their marks are given below : Student No. 1 2 3 5 6 8. 10 Marks in English 78 40 50 55 52 49 69 54 59 58 Marks in Mathematics 70 60 60 75 69 55 70 65 65 60 Determine Spearman's rank correlation coefficient.