This lesson can be used for revision for the higher Maths GCSE. The examples are quick and concise with exam style questions, go to GCSE Maths if you need more in-depth explanations.

How to draw and use stem and leaf diagrams?

Example 1: The following are the measurements of 15 girls' wrist width in cm.

(a) Draw an ordered stem and leaf diagram.

(b) Work out the mode.

(c) Work out the median.

(d) Work out the mean.

(e) Work out the range.

(f) Work out the interquartile range.

(g) 20 boys with wrist widths were also measured. The range was 15 cm and the mean was 18 cm. Compare the boys and girls data.

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