Question

calculate the average marks ->
73,.77.,97,100, 125, 128, 132, 133.,.135,
140, 141,168​

Answer 1

Average marks = 120.75

Step-by-step explanation:

We are given the list of following marks below;

73, 77, 97, 100, 125, 128, 132, 133, 135,  140, 141, 168​

Now, as we know that the average (mean) formula for the discrete data without any frequency is given by ;

                 Mean  =  $\frac{\text{Sum of all the observations}}{\text{Total number of observations}}$

So,  Average marks  =  $\frac{73+77+97+100+ 125+ 128+ 132+133+135+140+141+168}{12}$

                                  =  $\frac{1449}{12}$

                                  =  120.75

Therefore, the average marks is 120.75.