Question

The following table shows the marks
obtained by 20 students in a class test
of 10 marks. Find the mean of marks
obtaibed.
Marks dotaineds 3,5,6,7,8,9
No of studentst 2,8,4,2,2,2
​

Answer 1

Answer:

183,9

Step-by-step explanation:

If u know you must have study divide right

When you divide mark dotained double time you get a answer.

After what answer you get you must multiply that answer to No of the students

And you done

Hope this help

Answer 2

*ANSWER*

Marks obtained by 20 students are :
25,40,15,16,28,39,41,22,28,30,36,40,30,18,22,32,48,32,38,40.
∴Mean,
x
ˉ
=
20
25+40+15+16+28+39+41+22+28+30+36+40+30+18+22+32+48+32+38+40
​

=31. (Out of 50)