Question

2. The marks obtained by 12 students in an examination (out of 50) are given below
18, 35. 2. 27. 40, 0, 21, 33, 27, 8, 36, 23
Find the mean marks​

Answer 1

Answer:

22.5 marks

Step-by-step explanation:

Total number of observations = 12

Mean =   Sum of observations

              --------------------------------

                No. of observations

           =    18+35+2+27+40+0+21+33+27+8+36+23

                ------------------------------------------------------------

                                              12

            =  270/12

            =  22.5 marks

Hope this helps...

Answer 2

Answer:

Mean=Sum of all observations/Total no. of all observations

=18+35+2+27+40+0+21+33+27+8+36+23/12

=270/12

=22.5