UPTET Feb 2016,p1; Q108

108The heights of 10 girls are measured (in cm) and the results are as follow
143,148,135,150,128,139,149,146,151,132.
The mean height (in cm) of girls is

Option : B
Explanation : 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

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