Question

Height (in cm) of 7 boys of a locality are 144 cm, 155 cm, 168 cm, 163 cm, 167 cm, 151 cm and 158 cm. Find their mean height.

Answer 1

Sum of the values = Sum of heights

= 144 cm + 155 cm + 168 cm + 163 cm + 167 cm + 151 cm + 158 cm = 1106 cm and

Number of values = Number of boys = 7

∴ The mean = `"Sum of heights"/"Number of boys" = 1106/7 = 158` cm