Mock Paper 14 Aug 2025 23:39
Edexcel – foundation
Question 22:
\[ \begin{array}{l} \text{Kiran records the midday temperatures, } T \, ^\circ\text{C, for 60 towns in Canada on a particular day.} \\ \text{The grouped data are shown below:} \\ \\ \begin{array}{|c|c|} \hline \text{Temperature } (T^\circ C) & \text{Frequency} \\ \hline 5 < T \le 10 & 4 \\ \hline 10 < T \le 15 & 10 \\ \hline 15 < T \le 20 & 18 \\ \hline 20 < T \le 25 & 20 \\ \hline 25 < T \le 30 & 8 \\ \hline \end{array} \end{array} \]
(a) \[ \begin{array}{l} \text{Calculate an estimate for the mean temperature.} \\ \rule{0pt}{3cm} \end{array} \] (3 marks)
(b) \[ \begin{array}{l} \text{Kiran says, 'The median temperature is 17.5°C because that is the middle of the median group.''} \\ \text{Is Kiran correct? Give a reason for your answer.} \\ \rule{0pt}{2cm} \end{array} \] (2 marks)