Distribution : Symmetric and Skewed

Symmetric and Skewed distribution of Data:

Symmetric Distribution:

  • When Mean, Median and Mode are at the same centre values, them we call it is symmetric distribution of data. This is also called Normal distribution.

  • Symmetric means, one half of the distribution is the mirror image of the other.
  • Symmetric distribution is the easiest distribution to understand the distribution and apply the several statistical technique.

                                                  Symmetric Distribution

                            


Skewed Distribution:

  • In real world, data are not distributed symmetrical. They are skewed in either side of the centre. 
  • Skewness is the measure of the distribution of data around the mean.

                
Negative Skewed Distribution 

                

Positive Skewed Distribution


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