You have the following information on the return to three stocks over the past 4 years. USE THIS INFORMATION TO ANSWER QUESTIONS 8 THROUGH 17
Ford GE Amazon
2016 10  6 2
2017  5 13 6
2018 14  5 1
2019  7 18 7
First question: What are the sample mean returns for each of these stocks?
a. 
Sample mean of Ford = 16 Sample mean of GE = 20 Sample mean of Amazon = 16 

b. 
sample mean of Ford = 3 sample mean of GE = 5 sample mean of Amazon = 6 

c. 
Sample mean of Ford = 3 Sample mean of GE =5 Sample mean of Amazon = 4 

d. 
none of these 
What are the sample variances in returns of the three stocks?
a. 
Sample variance of Ford = 10.551 Sample variance of GE = 14.583 Sample variance of Amazon = 2.944 

b. 
sample variance of Ford = 111.333 sample variance of GE = 212.666 sample variance of Amazon = 89.666 

c. 
sample variance of Ford = 111.333 sample variance of GE = 151.333 sample variance of amazon = 8.666 

d. 
None of these 
What are the sample standard deviations of the returns on the three stocks?
a. 
sample standard deviation of Ford = 111.333 sample standard deviation of GE = 212.666 sample standard deviation of Amazon  8.666 

b. 
sample standard deviation of Ford = 10.551 sample standard deviation of GE = 12.301 sample standard deviation of Amazon = 2.944 

c. 
sample standard deviation of Ford = 10.551 Sample standard deviation of GE =14.583 Sample standard deviation of Amazon = 8.666 

d. 
None of these 
What is the sample covariance of the return on Ford and the return on GE?
a. 
 40.66 

b. 
 147.666 

c. 
 127 

d. 
None of these 
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