The heights (in cm) of 10 students in class VII are given below:136, 147, 151, 142, 156, 145, 138, 152, 151, 139(a) What is the height of the tallest student?(b) What is the height of the shortest student?(c) Find the mean height of the students.(d) Find the range of the data.

(a) Height of the tallest student = 156 cm

(b) Height of the shortest student = 136 cm

(c) $Mean\ height\ of\ the\ students\ =\ \frac{Sum\ of\ height\ of\ all\ students}{Total\ no.\ of\ students}$

    $ \begin{array}{l}
Mean\ height\ of\ the\ students\ =\ \frac{136+147+151+142+156+145+138+152+151+139}{10} \ cm\\
\\
\\
Mean\ height\ of\ the\ students\ =\ \frac{1457}{10} \ cm\\
\\
\\
Mean\ height\ of\ the\ students\ =\ 145.7\ cm
\end{array}$

(d) Range of the data = Height tallest student - Height smallest student

     Range of the data = 156 - 136 cm

     Range of the data = 20 cm

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Updated on: 10-Oct-2022

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