Question

I want the steps by step explaination ​

Answer 1

Answer:

1) Finding mean formula

Mean = sum of observations / No.of observations

here the observations are the weight of the students

and the number of observations are 7

those are 48.5, 50, 54.5, 46.5, 63, 47, 40.5

we need to first add all the observations

which is 350

So, now divide 350 by the number of observations which is 7

350/7

which is 50

For the second sum refer attachment