A survey regarding the heights (in cm) of 50 girls of class X of a school was conducted and the following data was…

CBSE Class 10 Maths PYQ · Statistics · Find Mean, median, mode · 5 Marks · July 2023 · Standard

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435 Marks · July 2023 · Standard

A survey regarding the heights (in cm) of $50$ girls of class X of a school was conducted and the following data was obtained :
Find the mean and mode of the above data.

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Correct table
Mean $= 145 + \frac{24}{50} \times 10$
$= 149.8$
$\therefore$ mean height is $149.8$ cm
Modal class is $150 - 160$
Mode $= 150 + \frac{(20-12)}{(2\times20-12-8)} \times 10$
$= 154$
$\therefore$ modal height is $154$ cm