1.	What is the difference between the highest and the lowest values?
		A.	80	B.	100
		C.	75	D.	84
		Hint
	2.	What is the range of the stem-and-leaf plot?
		A.	67	B.	71
		C.	77	D.	84
		Hint
	3.	Which value occurs most often?
		A.	71	B.	84
		C.	77	D.	99
		Hint
	4.	Which interval has the most values?
		A.	60-70	B.	50-60
		C.	80-90	D.	70-80
		Hint
	5.	Find the mean of the data in the stem-and-leaf plot.
		A.	78	B.	77
		C.	99	D.	67
		Hint