The nurse at a health centre records the heights, h cm, to the nearest cm, of a group of boys in the same school age group. The frequency table shows the results. Cumulative h Frequency

(f) frequency 165 8 a Complete the table by putting in the cumulative frequency totals. 166 7 167 9 b State the number of boys who are less than 168 14 168 cm tall. c Write down the height that is the most 169 18 common. 170 16 AppendixLO1