Question

The mean of the following observation is

Xi 2 3 4 5
fi 4 5 3 2
A) 3.2 B) 4.2 C)6.5 D)7.3​

Answer 1

Answer:

Xi fi xifi

2 4 8

3 5 15

4 3 12

5 2 10

——- ——-

14 45

mean:- € xifi / €fi

:- 45/14

:- 3.2

So,option A. 3.2 is the correct answer.