Question 1 (2 points)

What is the mean (average) for the past 4 months of sales if sales were: 164, 220, 196, 224?

Question 1 options:

	180
	250
	cannot be determined from the data given
	200
	201

Question 2 (2 points)

What is the deviation from the mean for the first month?

Question 2 options:

	-86
	-36
	-37
	-16

Question 3 (2 points)

What is the sum of the squared deviations?

Question 3 options:

	2400
	2284
	1800
	3168

Question 4 (2 points)

What is the standard deviation for the 4 months?

Question 4 options:

	84
	15.1
	57.1
	23.9

Question 5 (2 points)

If the service level required is 95%, what is the safety stock required?

Question 5 options:

	25
	39
	94
	201