Descriptive Statistics (Mean, Median, SD)
GRE · Flashcards · Application
GRE · FLASHCARDS
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QUESTION
Find the z-score of
x
=
86
x=86
x
=
86
for a distribution with
μ
=
80
\mu=80
μ
=
80
and
σ
=
3
\sigma=3
σ
=
3
.
QUESTION
Identify the new mean if the mean is
12
12
12
and each value increases by
5
5
5
.
QUESTION
Identify the median of the ordered data set
{
1
,
3
,
7
,
9
}
\{1,3,7,9\}
{
1
,
3
,
7
,
9
}
.
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ANSWER
5
5
5
. For even n=4, averaging the second and third values (3 and 7) gives the median.
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