| Date | May 2015 | Marks available | 2 | Reference code | 15M.1.hl.TZ1.2 |
| Level | HL only | Paper | 1 | Time zone | TZ1 |
| Command term | Find | Question number | 2 | Adapted from | N/A |
Question
A mathematics test is given to a class of 20 students. One student scores 0, but all the other students score 10.
Find the mean score for the class.
[2]
a.
Write down the median score.
[1]
b.
Write down the number of students who scored
(i) above the mean score;
(ii) below the median score.
[2]
c.
Markscheme
\(\bar x = \frac{{1 \times 0 + 19 \times 10}}{{20}} = 9.5\) (M1)A1
[2 marks]
a.
median is \(10\) A1
[1 mark]
b.
(i) \(19\) A1
(ii) \(1\) A1
[2 marks]
Total [5 marks]
c.
Examiners report
Well done.
a.
Well done.
b.
Both parts well done.
c.
