Statistics. Statistics Student name: Tutor name:. 1|Pag

Statistics
Statistics
Student name:
Tutor name:
1 | P a g e

Statistics
Number one
A survey was conducted where the ages of 30 people from a shopping mall was recorded. The
data was as below.
56 45 36 58 42 64
52 30 47 25 53 43
50 61 65 39 33 39
36 43 29 43 25 42
33 63 42 65 26 45
Table 1
Number two
Age group and frequency table
Age
group
Frequenc
y
21 to 30 5
31 to 40 6
41 to 50 10
51 to 60 4
61 to 70 5
Table 2
Number three
Bar graph for the age group frequency
21 to 30 31 to 40 41 to 50 51 to 60 61 to 70
0
2
4
6
8
10
12
Age group graph
Age group
Frequency
Figure 1
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Statistics
The graph shows that the ages are almost normally distributed.
Number four
age
Mean
44.3333333
3
Standard Error
2.23932118
9
Median 43
Mode 42
Standard
Deviation
12.2652672
9
Sample Variance
150.436781
6
Kurtosis -0.88029959
Skewness
0.20536271
5
Range 40
Minimum 25
Maximum 65
Sum 1330
Count 30
Table 3
Mean = 44.33
Median = 43
Mode = 42
Range = 40
Standard deviation = 12.27
Coefficient of deviation = 2.24
The mean, median and mode are almost similar. Mode is the smallest (42) and mean is the
largest (44.33).
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