Skewness and kurtosis
The
skewness in basic term implies off centre so does in statistics, it mean lack
of symmetry. With the help of skewness one can identity the shape of the
distribution of data. Kurtosis on the other hand refers to the pointedness of a
peak in the distribution curve. The main difference between skewness and
kurtosis is that the former talk of the degree of symmetry, whereas the later takeoff
the degree of symmetry whereas the latter tall of the degree of peakedness in
the frequency distribution..
Data can be distribution in many way like
spread out more on left on the right or evenly spread. When the data is scattered uniformly at the
central point it called as normal distribution. It is perfectly symmetry, bell
shaped curve.Here all the three mean, mediyan, mode line at one point.
Skewness
and kurtosis are two important
Character of
distribution that are studied in descriptive statistics. To further comprehed the
understanding. The term skewness is used
to mean the absence of symmetry from the mean of data set.it is characterized
of the deviation from the mean to be greater on one side than the other.
The
characteristic of a frequency distribution that ascertain it s symmetry about
the mean is called skew ness. On the otherhand kurtosis mean the relative
pointedens of the standared bell curve defined by the frequency distribution.. Skewness
is measure of the degree of lopsidedness in the frequency distribution. Convery
kurtosis is a measure of degree of tiredness in the frequency distribution. Skewness is an indicator of lack of symmetry.
Both left and right side of the curve are unequal with respect to the central
point
Skewness
show how much and in which directed the values deviate from the mean. For
A normal
distribution the value of skenwss and kurtosis statistics is zeros. The cruve of
the distribution is thatis skewss.
Definition
In kurtosis is defined as the parameters of relatively sharpened of thepeak of
relatively sharpened of the peaked probability curve.
In
kurtosis is defined as the parameters of relatively sharpened of thepeak of
relatively sharpened of the peaked probability curve.
Table 1 sarveshwar India’s blog
Moment number
|
name
|
Measure of
|
1
|
mean
|
Central tendency
|
2
|
variance
|
dispersion
|
3
|
skewness
|
Symmetry
|
4
|
kurtosis
|
shape
|
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