Question
A student collected the following data on pebble sizes at three locations along a stream:
Location 1 (near source): 45, 52, 38, 61, 49 cm (median: 49 cm) Location 2 (middle): 22, 18, 25, 29, 20 cm (median: 22 cm) Location 3 (near mouth): 8, 12, 6, 10, 9 cm (median: 9 cm)
(a) Calculate the mean pebble size at Location 1. (2 marks) (b) Which presentation method would be most appropriate for comparing median pebble size at the three locations? Justify your choice. (3 marks)
5 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.