| Date | November 2015 | Marks available | 4 | Reference code | 15N.1.sl.TZ0.1 |
| Level | SL only | Paper | 1 | Time zone | TZ0 |
| Command term | Find | Question number | 1 | Adapted from | N/A |
Question
The following box-and-whisker plot represents the examination scores of a group of students.
Write down the median score.
The range of the scores is 47 marks, and the interquartile range is 22 marks.
[1]
a.
Find the value of
(i) \(c\);
(ii) \(d\).
[4]
b.
Markscheme
60 A1 N1
a.
(i) valid approach (M1)
eg \(\max - \min = {\rm{range}},c = 40 + 47\)
\(c = 87\) A1 N2
(ii) valid approach (M1)
eg\(\;\;\;Q3 - Q1 = IQR,{\text{ }}74 - 22\)
\(d = 52\) A1 N2
b.
Examiners report
[N/A]
a.
[N/A]
b.
