Total height of 10 girls
= 143 + 148 + 135 + 150 + 128 + 139 + 149 + 146 + 151 + 132
= 1421 cm .
Therefore, mean height = 1421/10
= 142.1 cm
= 143 + 148 + 135 + 150 + 128 + 139 + 149 + 146 + 151 + 132
= 1421 cm .
Therefore, mean height = 1421/10
= 142.1 cm

