Question

if from the following table of airthmatic mean of marks obtained by students is 25, then find the value of x ? class interval 0-10,10-20,20-30,30-40,40-50,marks 3,x,6,10,5​

Answer 1

Answer:

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Answer 2

Answer:

Answer

Marks Midpoint (x) No. of students (f) fx

0−10

10−20

20−30

30−40

40−50

50−60  5

15

25

35

45

55  5

10

25

30

20

10  25

150

625

1050

900

550

∑f=100 ∑f(x)=3300

x

=  

∑f

∑f(x)

​  

=  

100

3300

​  

=33

∴ Mean =33

Step-by-step explanation: