Foundation November 2021 Paper 1 Q13
13 Katy records the number of cars using a drive-through each hour for 24 hours.
Here are the results.
36 20 37 53 42 41 24 18 39 35 40 47
38 17 23 18 13 35 10 7 6 18 31 57
Katy makes this tally and frequency chart to put the data into groups.
| Number of cars | Tally | Frequency |
|---|---|---|
| 0 to 10 | ||
| 10 to 20 | ||
| 20 to 30 | ||
| 30 to 40 | ||
| 40 to 50 |
Make two criticisms of Katy’s tally and frequency chart.
You do not need to complete the chart. [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| There is an overlap | B1 | oe eg 20 can go in two rows |
| There is no category above 50 | B1 | oe eg 53 can’t go into the table |
Additional guidance
| Criticism of overlapping categories, eg | |
| 10 (or 20, 30 or 40) can go in two places | B1 |
| 20 (or 10 or 30 or 40) appears twice | B1 |
| Should be 0-9, 10-19, 20-29 etc (minimal implied criticism) | B1 |
| 0-10; 11-20; 21-30 etc (no criticism) | B0 |
| It doesn’t give a clear number of cars | B0 |
| Repeats the same number (could refer to the number of cars) | B0 |
| Criticism of missing categories, eg | |
| There is no row for the 53 (or 57) | B1 |
| Doesn’t go up high enough | B1 |
| There’s not space for all the numbers | B1 |
| Some cars are left out | B1 |
| She only put up to 50 | B1 |
| The last group is not big enough | B1 |
| There should be another row (minimal implied criticism) | B1 |
| There is a number over 50 | B0 |
| Cars go up to 57 | B0 |
| Add another frequency box | B0 |
| Drawing another row to the table with no explanation | B0 |