| Exam Board | Edexcel |
|---|---|
| Module | S1 (Statistics 1) |
| Paper | Download PDF ↗ |
| Topic | Data representation |
| Type | Draw box plot from summary statistics |
| Difficulty | Easy -1.2 This is a straightforward S1 question requiring routine application of the outlier formula (given in the question) and drawing a standard box plot from provided summary statistics. All values are given; no data processing or problem-solving is needed, just mechanical calculation and careful plotting. |
| Spec | 2.02f Measures of average and spread2.02h Recognize outliers |
\begin{enumerate}
\item The students in a class were each asked to write down how many CDs they owned. The student with the least number of CDs had 14 and all but one of the others owned 60 or fewer. The remaining student owned 65 . The quartiles for the class were 30,34 and 42 respectively.
\end{enumerate}
Outliers are defined to be any values outside the limits of $1.5 \left( Q _ { 3 } - Q _ { 1 } \right)$ below the lower quartile or above the upper quartile.
On graph paper draw a box plot to represent these data, indicating clearly any outliers.\\
(7 marks)\\
\hfill \mbox{\textit{Edexcel S1 Q1}}