Question

Question 3

Assuming Sunday is the first day of the week, what is the correlation between the day of the week and the number of orders per day?

Date	Day of the week	#Orders
June 29, 2020	2	35
June 30, 2020	3	22
July 1, 2020	4	11
July 2, 2020	5	17
July 3, 2020	6	36
July 4, 2020	7	55
July 5, 2020	1	42
July 6, 2020	2	28
July 7, 2020	3	25
July 8, 2020	4	19

Answer:

Question 4

1) If X and Y are random variables with negative correlation. Which of the following are correct? (select all that apply)

2) If we observe higher than average values of X, we expect to see higher than average values of Y

3) X and Y are independent variables with negative covariance

4) If we observe higher than average values of X, we expect to see lower than average values of Y

Answer 1