Foundation November 2024 Paper 1 Q9
9 Here is a list of five numbers.
\[14 \qquad 2 \qquad 26 \qquad 43 \qquad 9\](a) Find the range. [2]
(b) A sixth number is added to the list.
The mean of the six numbers is 23.5.
The mean of the six numbers is 23.5.
Work out the sixth number. [3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 41 | 2 | B1 for only 2 and 43 identified | |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 47 nfww | 3 | M2 for \(23.5 \times 6 - (14 + 2 + 26 + 43 + 9)\) oe or M1 for \(23.5 \times 6\) may be implied by 141 or \(14 + 2 + 26 + 43 + 9\) may be implied by 94 | \(23.5 \times 2\) and \(4.7 \times 10\) are examples of wrong working |