4MA0 Foundation January 2018 Paper 1R Q9

EdexcelFoundationOld spec7 marksAverages (including IQR)

9 Here are the lengths, in mm, of 10 snails a scientist found in a forest.

18    22    31    31    41    26    27    47    34    23

(a)
(i) Work out the median length. (2)
(ii) What percentage of the 10 snails have a length greater than the median length? (1)
(b) Work out the mean length. (2)

The scientist finds a snail in a field.
This snail has a length that is longer than any of the 10 snails he found in the forest.
The lengths of the 11 snails have a range of 32 mm.

(c) Work out the length of the snail the scientist finds in the field. (2)
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