Write appropriate function to perform the following on a Dataframe. (i) Calculate the sum (ii) Count the values (iii) Calculate the average (iv) Calculatethe median (v) Calculate the most repeated value (vi) Calculate the standard deviation (vii) Calculate the variance (viii) Calculate the maximum value

Ans:
(i) sum()
(ii) count()
(iii) mean()
(iv) meadian()
(v) mode()
(vi) std()
(vii) var()
(viii) max()