(a) from the plots, does it appear that the errors are normally
distributed? Justify your answer.
a) As given in the plots for the problem,
One of the plot that is Q-Q plot to check the normality of the
residuals shows that the errors are normally distributed similarly
histogram shows the same that the errors are normally
(b) from the plots,does it appear as if there are outliers?
Justify your answer.
b) As per the given plots,
it doesn't seems to be that any outlier contains in the data of
the researcher which would affect our study.
(c) from the plots, does it appear that the group, have equal
variance? Justify your answer.
c) Take a look at the
As it shows that there are three predicted values and for each
predicted value the residuals are associated with it and to know
that the residuals that are associated are constant this plot shows
the very same thing that the variance among the residuals are
(d) Considering the sample size of each group, would you suggest
removing any observations? Why or why not.
d) No, i wouldn't remove any observation from the given sample
size because it gives the required result and removing the
observation may occurs the fluctuation or variation amongst the
residuals which would affect our entire study.