1.	Find the standard deviation of the data in the stem-and-leaf plot to the nearest hundredth.
		A.	10.72	B.	11.74
		C.	228.50	D.	217.00
		Hint
	2.	Find the standard deviation of the set {15, 42, 30, 22, 19, 32} to the nearest hundredth.
		A.	9.91	B.	9.05
		C.	10.14	D.	10.03
		Hint
	3.	The scores on a national achievement test are normally distributed with a mean of 50 and a standard deviation of 10. Out of a group of 200 students, how many would you expect to score more than 70?
		A.	1	B.	32
		C.	5	D.	10
		Hint
	4.	Which of the graphs will have the lowest standard deviation?
		A.		B.
		C.		D.
		Hint
	5.	Suppose that the mean is 50. How many standard deviations away is the value 65?
		A.	about 1 standard deviation	B.	cannot be determined from given information
		C.	about 2 standard deviations	D.	within 1 standard deviation
		Hint