1.	If the lowest class interval of the set of data {67, 90, 83, 85, 73, 80, 78, 79, 68, 71} is 65-70, find the class mark of that interval.
		A.	70	B.	65
		C.	67.5	D.	2
		Hint
	2.	For a set of data organized in a frequency distribution, the midpoint of each class interval is called a ______.
		A.	class limit	B.	class mark
		C.	class range	D.	class interval
		Hint
	3.	In a stem-and-leaf plot, what could 8|1 represent?
		A.	8100	B.	81
		C.	all of these	D.	0.81
		Hint
	4.	What is the value of n so that the mean of {n, 3n - 1, 3n, 3n + 1} is 10?
		A.	-2	B.	7
		C.	4	D.	6
		Hint
	5.	Which value is an outlier of the set of data {67, 90, 83, 85, 73, 80, 78, 79, 68, 71}?
		A.	There is no outlier for the data.	B.	90
		C.	67	D.	68
		Hint
	6.	Given the partial table below, identify the upper and lower limits of an interval about the mean within which 45% of the values of a set of data can be found if the mean is 30.5 and the standard deviation is 13.8. Assume the data are normally distributed.
		A.	22.22-38.78	B.	5.5-22.1
		C.	9.6-18.0	D.	26.3-34.7
		Hint
	7.	Using the partial table below, what percent of the data is between 40 and 50 if the mean is 30.5 and the standard deviation is 13.8? Assume the data are normally distributed.
		A.	12.1%	B.	16.1%
		C.	24.2%	D.	32.2%
		Hint
	8.	Use the partial table below. If = 6.4.0, N = 100, and = 37.1, find the interval about the sample mean that has a 1% level of confidence.
		A.	about 35.18-39.02	B.	about 35.85-38.35
		C.	about 35.45-38.75	D.	about 36.04-38.16
		Hint
	9.	The following is a frequency table of the ages of all the residents in the town of Mt. Plaines. Find the standard deviation of the data.
		A.	27.93	B.	28.51
		C.	27.56	D.	27.08
		Hint
	10.	From a population of 1,000 items, a sample of 750 is chosen and found to have a standard deviation of 33. Find the standard error of the mean.
		A.	1.2	B.	2.6
		C.	1.04	D.	3.65
		Hint