Q. 13. Ten competitors in a contest were ranked by two judges inthe following order:First judge 1549.8732.610.2nd judge 4 5 6 823.110.Calculate rank Co-efficient of Correlation.

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Answered: Q. 13. Ten competitors in a contest…

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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7. In a contest for Mr. CAMPUS Personality, two judges gave their ratings to 8 candidates. Compute the coefficient of rank correlation (spearman). Interpret the result. Judge 1 Judge 2 R₁ R₁₂ d 88 84 1. 4 -3 a² 9 87 87. 4 2. 2 0 0 85 88. 3 1 2 4 80 854 4. 79, 82. 5. 78 80. 6.5 78 78 6.5 75 79 60 35687 1 1 0 0 0.5 0.25 -1.5 2.25 7 1 1 d-17.5
.14. The ranks of 10 students in two subjects A and B are as follows: A: 3 8. 4 7. 10 2 1 6 9 B: 6 4 6. 8. 2 3 10 5 7 Calculate the coefficient of rank correlation 219
2. These are the evaluation scores given by two critics to 10 paintings at an exhibition: Painting: A В D. E F G H I J Critic A: 4 7 8. 9. 10 1 Critic B: 3 7 1 5 8 2. 6 10 4 9. Determine whether a significant degree of rank correlation exists, using a = 0.05 as the desired significance level. en
4. Consider the following data: XINMASSN 1 2 3 4 5 6 7 y 6 7 5 4 3 1 2 a) Make a scatterplot of these data. The variable labeled "x" should be plotted along the x-axis. Describe the pattern. b) Find the correlation coefficient for these data.
2. Two bank officers examined eleven loan applications Compute the rank correlation and ranked them. coefficient and determine if it is significant. Officer I 1 7 4 2 3 6 . 5 9. 10 8. 11 Officer 1 6. 52 3 4 7. 11 8. 10 9. II
6. The following table shows the marks of 12 students in Accounts and' Q.T. . Determine the coefficient of correlation. Marks in 65 40 35 75 65 80 35 20 85 65 55 33 ассоuntancy Marks in Q.T 30 55 68 28 76 25 80 85 2035 45 65
22. The arm span and foot length were measured (in Using the computer output, what is the correlation? centimeters) for each of the 19 students in a statistics O 0.630 class and displayed in the scatterplot. An analysis was completed and the computer output is shown. O 0.649 O 0.794 O 0.806 Arm Span vs. Foot Length 29 27 ... 19 155 160 165 170 175 180 185 190 195 Mark this and return Save and Exit Next Submit 65 DELL F3 4101 F4 F5 F6 FZ F8 F9 F10 F11 Priscr F12 Insert %23 %24 & 4. 5 7 08. E R D F G J K L Foot Length (cm) 立

.Seven instructors are rated by first and seconf year students on “clarity of presentation” and the results are tabulated. Is there a significant correlation between the ratings of freshmen and sophomores on the clarity of presentation of theseveninstructors? Intructor Freshmen Sophomores 1 44 58 2 39 42 3 36 18 4 35 22 5 33 31 6 29 38 7 22 38
Five students provided data regarding the number of hours they spent on studying (TimeStudy) and their GPA. The data are as follows. Answer the following questions. TimeStudy GPA Student 1 2.00 3.50 Student 2 4.00 3.70 Student 3 5.00 3.30 Student 4 3.00 2.60 Student 5 4.00 3.40 a) According to the SPSS table, what can you conclude regarding the correlation between TimeStudy and GPA? Report the conclusions in proper formats. b) By fitting a linear regression line to represent the relationship between TimeStudy and GPA, the regression line function is ??? = ?. ?? + ?. ?? × ?????????. See the figure Calculate (by hand) the SSresidual.

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Q. 13. Ten competitors in a contest were ranked by two judges in the following order: First judge 1 5 4 9. 8 7 3 2. 10. 2nd judge 4 5 6 8 7 2 3 1 10. Calculate rank Co-efficient of Correlation.