On a 20-item measure of self-esteem (higher scores reflect greater self-esteem), five teenagers scored as follows: 16 5 18 9 11
Calculate the (a) range, (b) inter-quartile range, and (c) variance and standard deviation
for these self-esteem scores.
What would be an ideal response?
a.
18 5
13
R H L = ?
= ?
=
b.
= = =
= ?
= ?
=
? ?
2
2 2
59
5
11.8
1537
139.24
5
22.16
X
X
N X
s X
N
c.
s = 4.71
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