Classical statistical methods such as ANOVA which are
frequently used by researchers to test their work are
confined to certain assumptions. One of the assumptions
is that the population under study is normally distributed.
The uninformed usage of this method under violations of
their assumption eventually will result in unreliable
findings. Can we imagine the degree of the damage done
to the research due to this mistake? However, most
researchers are not aware of the seriousness of the error
because they are only the users of the statistical methods.
Most quantitative researchers, especially in the field of
business, economics, and social sciences, rely heavily on
the classical methods to solve their problems. Continuous
use of the classical methods without considering the
assumptions will most probably generate erroneous
results.