Question

the marks obtained by students in a maths test out of 20 are given below, find the mean .
9,8,11,12,5,4,3,15,17,18,8,12,4,3,18,14,16,8,18,17.
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Answer 1

Answer:

11.4375

Step-by-step explanation:

Average=Mean

so,

Average= sum of all observations

                number of observations

Average= 9+8+11+12+5+4+3+15+17+18+8+14+16+8+18+17

                                              20

              =     183

                      20

             = 9.15

So average or mean is 9.15

Hope this helps

please mark brainliest

Answer 2

Answer:

Step-by-step explanation:

Mean=Sum of terms/Number of terms

Mean=220/20=11