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Questions on Data Mean
Q1)
Find the mean of the following list:
2 , 5 , 6.7 , 12.4 , 16.4 , 16.7 , 20.8 , 25.4 , 35.9
The mean is:
Q2)
The mean of a list of 25 numbers is 15.4, what is the sum of the list?
Q3)
The mean score of the 32 students in Group 1 on a maths exam was 72%.
The mean score of the 40 students in Group 2 on the same exam was 65%.
What was the mean score for the maths exam for all students in Groups 1 and 2?
%
Q4)
L
U
f
m
f
´
m
0
10
5
10
20
8
20
30
12
30
40
20
40
50
34
50
60
27
60
70
14
70
80
8
80
90
5
90
100
2
The mean is:
Q5)
L
U
f
m
f
´
m
0
5
12
5
10
15
10
20
27
20
40
39
40
100
27
100
200
13
The mean is:
Q6)
L
U
f
m
f
´
m
0
7
12
7
12
25
12
22
29
22
45
27
45
60
35
60
70
47
70
100
58
100
115
45
115
130
36
130
200
22
The mean is:
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