| Date | May 2014 | Marks available | 2 | Reference code | 14M.1.sl.TZ1.2 |
| Level | SL only | Paper | 1 | Time zone | TZ1 |
| Command term | Find | Question number | 2 | Adapted from | N/A |
Question
A class of 13 Mathematics students received the following grades in their final IB examination.
3 5 3 4 7 3 2 7 5 6 5 3 4
For these grades, find the mode;
[1]
a.
For these grades, find the median;
[2]
b.
For these grades, find the upper quartile;
[1]
c.
For these grades, find the interquartile range.
[2]
d.
Markscheme
3 (A1) (C1)
[1 mark]
a.
4 (M1)(A1) (C2)
Note: Award (M1) for ordered list of numbers seen.
[2 marks]
b.
5.5 (A1) (C1)
[1 mark]
c.
5.5 – 3 (M1)
Note: Award (M1) for 3 and their 5.5 seen.
= 2.5 (A1)(ft) (C2)
Note: Follow through from their answer to part (c).
[2 marks]
d.
Examiners report
[N/A]
a.
[N/A]
b.
[N/A]
c.
[N/A]
d.
Syllabus sections
Topic 2 - Descriptive statistics » 2.6 » Measures of dispersion: range, interquartile range, standard deviation.
Show 70 related questions
