Question

14. The mean of the distribution is:
4
6
9
10
Marks
Frequency
15
8
5
10
10
7​

Answer 1

Answer:

In a discrete probability distribution of a random variable X, the mean is equal to the sum over every possible value weighted by the probability of that value; that is, it is computed by taking the product of each possible value x of X and its probability p(x), and then adding all these products together, giving.

Step-by-step explanation:

find the mean of the given distribution

class mark (X) : 4 6 9 10 15

frequency (f) : 5 10 10 7 8

 

​  

=  

40

360

​  

=9