Determine the direction of the skew for the two curves in problem 2.8 by examining the curves or the frequency distributions (or both).
a.
Class interval
f
48–52
1
43–47
38–42
2
33–37
4
28–32
5
23–27
7
18–22
10
13–17
12
8–12
6
3–7
b.
54–56
3
51–53
48–50
15
45–47
14
42–44
11
39–41
8
36–38
33–35
30–32
27–29
24–26
0
21–23
18–20
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