1
BES Tutorial Sample Solutions, S1/10
WEEK 3 TUTORIAL EXERCISES (To be discussed
in the week starting March 15)
1.
Using the car data from Week 2, Question 3:
(a)
Redo Q3(c) using EXCEL to confirm that the
frequency histogram is given by Figure 3.1.
(b)
Calculate the mean, median and mode for this sample
of data and use them to further describe the
distribution of ages.
Mean
3
.
7
20
11
24
...
6
5
5
Ordering the data from lowest to highest:
2, 2, 3, 4, 4, 5, 5, 5, 6, 6, 6, 6, 6, 7, 9, 10, 11, 11, 14, 24,
0
1
2
3
4
5
6
7
8
9
10
2
6
10
14
18
22
Frequency
Age
Figure 3.1: Revised histogram for age
of cars