1.

Give the difference between Dispersion and Skewness. 

Answer»
BasisDispersionSkewness
NatureShows the spread of values from the central valueShows whether series is symmetrical or asymmetrical
BasisIt depend upon the averages of second order.Depends upon the averages of first and second order.
Relationship with moment                       Based on all three momentsBased on first and third moment only.
VariabilityStudy of the Variabili

 
Study of concentration in lower and higher variables.
Diagrammatic presentationCannot be presented by means of diagrams & graphs.Skewness can be presented by diagram.
InferenceAll the measures of dispersion are positive.
 
Coefficient of skewness can be positive or negative.



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