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

Mean =
$sum \: of \: observations \div no \: of \: observations$
Sun of observation= 1106
no of observation= 7
Mean = 1106/7 = 158
Mean = 158