Using the heights of students shown in the table below as compiled byGeorge Chilufya,WabeiKayongo,TiwongeBanda, LynnLwandoand other group members in the second year SSS242 assignment investigating stress and its impact on academic performance of Mulungushi University students.

Height (cm)

Frequency (f)

140 -< 145

13

145 -< 150

18

150 -< 155

34

155 -< 160

31

160 -< 165

21

165 -< 170

15

Total

132

a)Calculate the mean?(16 marks)

b)What does mean tell us about the students in this table?(2 marks)

c)Calculate the mode?(2 marks)