14 Samira wants to compare the heights of boys and girls when they are 14 years old. (a) She takes a random sample of five boys from the local running club and five girls from her class at school. The children that she samples are all 14 years old. Give two reasons why this may not be a good sample. 1 (b) Samira measures the height, h cm, of each child. Samira wants to record the heights using these class intervals. h < 150 160