

Question

The table below gives the frequency distribution of the marks obtained by some students in a scholarship examination.



Scores (x)
15
25
35
45
55
65
75


Freq (f)
1
4
12
24
18
8
3



(a) Calculate, correct to 3 significant figures, the mean mark.
(b) Find the : (i) mode ; (ii) range of the distribution.




The table below gives the frequency distribution of the marks obtained by some students in a scholarship examination.



Scores (x)
15
25
35
45
55
65
75


Freq (f)
1
4
12
24
18
8
3



(a) Calculate, correct to 3 significant figures, the mean mark.
(b) Find the : (i) mode ; (ii) range of the distribution.

