Statistics Test...

The choices of the fruits of 42 students in a class are as follows:
A, O, B, M, A, G, B, G, A, G, B, M. A, O, M, A, B, G, M, B, A, O, M, O, G, B, O, M, G, A, A, B, M, O, M, G, B, A, M, O, M, O, where A, B, G, M and O stands for Apple, Banana, Grapes, Mango and Orange respectively.
Which two fruits are liked by an equal number of students?

The average of five numbers is $$40$$ and the average of another six numbers is $$50$$. The average of all numbers taken together is _______.

The average rainfall for a week, excluding Sunday, was $$10\ \text{cms}$$. Due to heavy rainfall on Sunday, the average for the week rose to $$15\ \text{cms}$$. How much rainfall was on Sunday?

Variance of first $$20 $$ natural number is 

The average marks of three batches of students having 70, 50 and 30 students respectively are 50, 55 and 45. Find the average marks of all the 150 students, taken together.

If there are $$N$$ individual observations $$X1, X2, ....Xn$$, Arithmetic mean $$=$$?

If the two observations are $$10$$ and $$0$$, their arithmetic mean is _______.

Number of Wicket taken by a team in series of $$10$$ matches are $$2, 3, 4, 5, 0, 1, 3, 3, 4, 3$$ find the mode of the set.

What is the mode value for the numbers $$5, 8, 6, 4, 10, 15, 18, 10$$?

Consider the following observation relating to marks obtained by $$10$$ students in CS Foundation Exam: $$201, 202, 207, 222, 276, 201, 246, 212, 285, 312$$.
Arithmetic mean $$=$$?