Averages (including IQR): Eduqas GCSE Foundation June 2025 Paper 2 Q10

Foundation June 2025 Paper 2 Q10

EduqasFoundationCurrent spec5 marksAverages (including IQR)

10. The temperature in Nuuk, Greenland was recorded at midday for each of the days Monday to Saturday.
The temperatures, in °C, are listed below.

\[-9 \qquad {-8} \qquad {-4} \qquad {-5} \qquad {-1} \qquad {-8}\]

(a) What is the mode of these temperatures? [1]

(b) What is the median of these temperatures? [2]

(c)

The temperature at midday on Sunday was recorded.
The mean midday temperature for the 7 days was \(-6\,{}^\circ\text{C}\).

What was the temperature at midday on Sunday? [2]

Scheme	Marks	Comments
\(-8\) (°C)	B1

Mark scheme (b)

Scheme	Marks	Comments
\(-6.5\) or \(-6\frac{1}{2}\) or \(\frac{-13}{2}\) (°C)	B2	B1 for either of the following: identifying \(-8\) and \(-5\) \(-13 \div 2\) If no marks, award SC1 for an answer of 6.5

Scheme	Marks	Comments
\(-7\)(°C)	B2	B1 for either of: \(-6 \times 7\) (= \(-42\)) \(\dfrac{-9-8-4-5-1-8+x}{7} = -6\) or better
	(5)