Higher November 2019 Paper 2 Q11
11 Megan grows potatoes.
The box plot below shows information about the weights of Megan’s potatoes.

Megan says that half of her potatoes weigh less than 50 grams each.
(a) Is Megan correct?
Give a reason for your answer. (1)
Give a reason for your answer. (1)
Amy also grows potatoes.
The box plot below shows information about the weights of Amy’s potatoes.

(b) Compare the distribution of the weights of Megan’s potatoes with the distribution of the weights of Amy’s potatoes. (2)
| Answer | Mark | Mark scheme |
|---|---|---|
| Explanation | C1 | eg ‘No’ the median is 57 |
| Answer | Mark | Mark scheme |
|---|---|---|
| Comparison | C1 | (ft) a correct comparison of medians eg the median weight for Megan was greater than the median weight for Amy |
| C1 | a correct comparison of a measure of spread eg the interquartile range of weights for Megan was greater than the interquartile range of weights for Amy For the award of both marks at least one of the comparisons must be in the context of the question |
Additional guidance
Simply quoting values for median, range and IQR is insufficient, they must be compared
| Median | Range | IQR | |
|---|---|---|---|
| Megan | 57 | 49 | 26 |
| Amy | 42 | 47 | 16 |
Figures given must be correct.
Comparisons can relate to the range or the IQR