2. Find rank correlation co-efficient for the following đata and give your comments.Marks in Accounts (x):8456895859677478Marks in Maths (y):3869565863788777CS Scanned with CamScanner

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Answered: 2. Find rank correlation co-efficient…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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The correlation between midterm and final grades for 300 students is 0.620. If 5 points are added to each midterm grade, the new r will be: a. 0.124 b. 0.57 c. 0.62 d. 0.744
Which value of r indicates a stronger correlation: r= 0.841 or r= - 0.949? Explain your reasoning. Choose the correct answer below. O A. r= 0.841 represents a stronger correlation because -0.949 > 0.841|. B. r= - 0.949 represents a stronger correlation because -0.949|> |0.841|. C. r= - 0.949 represents a stronger correlation because 0.841 > - 0.949. D. r= 0.841 represents a stronger correlation because 0.841 > - 0.949.
The following data gives the number of hours 10 students spent studying and their corresponding grades on their midterm exams, Hours spent studying 0.5 1 1.5 2 2.5 4 4.5 5 5.5 6 Midterm Grades 63 69 75 78 81 84 90 93 96 99 Draw a scatter plot of the given data. Select a location in the chart to plot a point. Points can be moved by dragging or using the arrow keys. Estimate the correlation in words: positive, neagative, no correlation Calculate the correlation coefficient, r. Round your answer to three decimal places. Hours unspervised 0 1 2 4 5 Overall Grades 100 92 88 84 72 Calculate the correlation coefficient, r. Round your answer to three decimal places. Determine whether the given correlation coefficient is staatically significant at the specified level of significance and sample size. r=0.452 ,a=0.005, n=28
7. Use the graphs below to answer (a) and (b) 9, 1 3 7 8 1 2 3 4 7 X LEFT RIGHT a. Which graph displays a negative correlation. Explain. b. Which graph displays the stronger correlation. Explain.
4. Find out Spearman's Rank correlation for the following data and write your comment. Profits 65 54 46 54 38 85 46 68 95 of X Profits 55 35 40 55 65 75 40 55 65 of Y 70 70
Here are several scatterplots. The calculated correlations are -0.977, 0.006, -0.487, and 0.777. Which is which? (a) (b) Match each scatterplot with its calculated correlation. (a) (b) (c) (c) (d) (d) 口ロ口口
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Example 5. Find the coefficient of correlation between the heights of brothers and sisters from the following data: Heights of brothers (in cm) : (x) 65 66 67 68 69 70 71 Heights of sisters 67 68 66 69 72 72 69 (in cm) : (y)
Please help me answer the questions about correlation according to the graph. So would it be linear, strong, positive, or no association? Or negative and weak?
a teacher asked her students how many hours of sleep they had the night before a test. what type of correlation does your graph show? Determine a equation line of best fit BY HAND using the points 7,90 nd 6,76. hours slept : 8 7 7 8 6 5 7 4 9 7 score 83 86 74 88 76 63 90 60 89 81
The following table gives the number of Canadian geese breeding pairs in Northern Quebec. Get the line of best fit and answer the questions below. Year (t = 0 is 1988) Number of breeding pairs 0 115 5 95 6 40 7 35 8 45 9 60 your answers to the nearest hundredth. The correlation coefficient was______ This means that there is a strong______ correlation between the year and the number of geese breeding pairs.

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2. Find rank correlation co-efficient for the following data and give your comments. Marks in Accounts (x): Marks in Maths (y): 84 56 89 58 59 67 74 78 38 69 56 58 63 78 87 77 ned with CamScanner