Question

2. Are the marks one receives in a course related to the amount of time spent
studying the subject? To analyze this mysterious possibility, a student took a
random sample of 10 students who had enrolled in an econometrics class last
semester. He asked each to report his or her mark in the course and the total
number of hours spent studying accounting These data are listed here.
Time
40
42
37
25
44
Marks
77
63
79
86
51
78
83
90
65
47
48
35
28
a. Calculate the variance and standard deviation (5 marks
b. Calculate the covariance. (5 marks)
c. Calculate the coefficient of correlation. (6 marks
d. Calculate the coefficient of determination. (4 marks
1​

Answer 1

Answer:

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Answer 2

Answer:

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Explanation:

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