6. The following table shows the marks of 12 students inAccounts and' Q.T. . Determine the coefficient ofcorrelation.Marksin 65 40 35 75 65 80 35 20 85 65 55 33ассоuntancyMarks in Q.T30 55 68 28 76 25 80 85 2035 45 65

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Answered: 6. The following table shows the marks…

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
2. It is known that the student score data in a class is as follows: 9, 8, 6, 7, 7, 8, 5, 3, 6, 7 Describe the data in terms of central tendency!
The following table gives information on the limited tread warranties (in thousands of miles) and the prices ($) of twelve randomly selected tires at a national tire retailer as of July 2020.\ Warranty 60 70 75 50 80 55 65 65 70 65 60 65 Price per tire 95 135 94 90 121 70 140 80 92 125 160 155 a) Find the correlation coefficient and interpret your result.b) Draw a scatter diagram for the above data and make a comment.c) Find the estimated least-squares regression line.d) Interpret the estimated slope and intercept value.e) Test at a 5% significance level whether the slope in the regression model is positive?f) Suppose that each value of price per tire given in the table is increased by 10 and the warranty values remain unchanged. Would you expect sample correlation (r) to increase, decrease, or remain the same? How do you expect the least-squares regression line to change?
12. x: 471.7 659.3 740.5 790.5 781.3 1047.3 969.5 1206.1 y: 446.3 680.2 725.2 765.3 740.4 1005.6 936.3 1156.8 Using the data find the y mean 219.60 833.28 205.42 807.01
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
The following table shows the annual family income of the students enrolled in the JRMSU-TC and their general weighted average (GPA). Students Annual Family Income (Pesos) General weighted average (GPA) % 1 85 100,000 50,000 2 79 3 150,000 4 180,000 5 300,000 6 500,000 7 230,000 2. Determine the correlation coefficient. 82 85 93 92 95
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
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

1 3. 6 8 9. 10 Sweet Glee is an ice cream shop chain that has locations all across the nation. Customers at Sweet Glee have the option of ordering 1, 2, or 3 scoops of ice cream in their cone. The mean number of scoops ordered is u= 1.70, with a standard deviation of o = 0.77. Suppose that we will take a random sample of n= 10 ice cream cone orders and record the number of scoops for each. Let x represent the sample mean of the number of scoops for the 10 ice cream cone orders. Consider the sampling distribution of the sample mean x. Complete the following. Do not round any intermediate computations. Write your answers with two decimal places, rounding if needed. (a) Find u- (the mean of the sampling distribution of the sample mean). (b) Find o- (the standard deviation of the sampling distribution of the sample mean).
) Find the correlation between social intelligence score obtained with the obtained by Dutt Self-Concept inventory for the following data. Social Intelligence test and self concept scores Test 1 Test 2 (Social Intelligençe) (Self-Concept) 80 112 78 98 56 82 45 78 48 56 72 78 68 79 57 62 65 87 61 88

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6. The following table shows the marks of 12 students in Accounts and Q.T.. Determine the coefficient of correlation. Marks ассоuntancy Marks in Q.T in 65 40 35 75 65 80 35 20 85 65 55 33 30 55 68 28 76 25 80 85 20 35 45 65