1MA0 Foundation March 2013 Paper 2 Q8
8 Here are the test marks for the students in Mrs Potter’s maths class.
| 28 | 36 | 25 | 43 | 18 | 39 | 30 |
| 36 | 27 | 31 | 33 | 14 | 22 | 36 |
| 23 | 12 | 38 | 36 | 40 | 45 | 27 |
(a) Complete the frequency table for these marks.
(3)
| Mark | Tally | Frequency |
|---|---|---|
| 10 – 19 | ||
| 20 – 29 | ||
| 30 – 39 | ||
| 40 – 49 |
(b) Work out the number of these students getting less than 20 marks. (1)
| Answer | Mark | Notes |
|---|---|---|
| 3, 6, 9, 3 | 3 | B3 for a table showing all 4 correct frequencies in the correct place. (condone the absence of or any incorrect tallies) [(B2 for 2 or 3 correct tallies or 2 or 3 correct frequencies even in the wrong columns) (B1 for 1 correct tally or 1 correct frequency even in the wrong column)] [SC: B2 for \(\frac{3}{21}\) and \(\frac{6}{21}\) and \(\frac{9}{21}\) and \(\frac{3}{21}\) shown in the frequency column] |
| Answer | Mark | Notes |
|---|---|---|
| 3 | 1 | B1 for 3 or ft table in (a) |