Answer:
(i) Height of the tallest girl = 151 cm (ii) Height of the shortest girl = 128 cm (iii) Range of the data = Highest observation - Lowest observation \[~=\text{151cm}-\text{128cm}=\text{23 cm}\] (iv) \[\text{Mean height of the girls =}\frac{\text{sum of all observations}}{\text{number of observataions}}\] \[=\frac{\begin{align} & 135+150+139+128+151 \\ & +132+146+149+143+141 \\ \end{align}}{10}=\frac{1414}{10}=141.\text{4 cm}\] (v) 5 girls have heights more than the mean height.
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