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Business Statistics, 3rd Edition
book

Business Statistics, 3rd Edition

by Naval Bajpai
April 2024
Intermediate to advanced content levelIntermediate to advanced
921 pages
37h 16m
English
Pearson India
Content preview from Business Statistics, 3rd Edition
Chapter 4
140
4.4.15.2 Standard Deviation and Variance for Discrete and Continuous Frequency
Distributions
In the case of a discrete series, the formula discussed above will vary slightly. In this case, we
have to compute an additional term:
fx x
ii
i
n
()
=
2
1
. The formula for sample standard deviation
and sample variance for a discrete frequency distribution is given as
Sample standard deviatio
nw
here()
()
s
fx x
N
Nf
ii
i
n
i
i
n
=
=
=
=
2
1
1
1
Sample variance where()
()
s
fx x
N
Nf
ii
i
n
i
i
n
2
2
1
1
1
=
=
=
=
Standard deviation and variance for a continuous frequency distribution can also be computed
by applying the same procedure we have adopted for a discrete frequency distribution. ...
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Publisher Resources

ISBN: 9789390168996