# Lesson 2 chapter 2 quantitative data lab activity

STAT LAB
LESSON 2
CHAPTER 2
FREQUENCY DISTRIBUTION AND GRAPHS FOR QUANTITATIVE DATA
Lab Activities
The scores on a calculus exam for a random sample of 40 students are as follows:
63
62
84
48
74
64
68
82
42
76
71
83
65
67
94
54
51
79
71
79
54
61
86
62
36
81
69
68
56
77
75
58
68
59
91
41
57
38
55
47
1) Construct frequency and relative frequency histograms using seven class intervals. Describe
the shape of the data set.
2) Construct a frequency polygon
3) Construct an ogive. Use the ogive to estimate the proportion of exam scores that are
between 80 and 90.
4) Construct stem-and-leaf.
a) What percentage of the students scored at least 86
b) What percentage of the students who scored at most 79
c) What percentage of the students who scored fewer than 60
d) What percentage of the students who scored greater than 84
e) What percentage of the students who scored between 50 and 80
f) Describe the shape of the distribution
5) Construct Dot Plot.

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