The heights of 10 different girls (in cm) are given here: 132, 135, 132, 140,
142, 135, 132, 138, 136 and 132.
i) What is the mean height?
ii) What is the mode of the above data?
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Answer:
5 girls
Step-by-step explanation:
Height of tallest girl = 151 cm
ii) Height of shortest girl = 128 cm
iii) Range = Height of tallest girl - shortest girl
iv) Mean height = \frac{Sum\ of\ all\ heights}{Number\ of\ girls}
Number of girls
Sum of all heights
= \frac{135\ +\ 150\ +\ 139\ +\ 128\ +\ 151\ +\ 132\ +\ 146\ +\ 149\ +\ 143\ +\ 141}{10}\ =\ \frac{1414}{10}
10
135 + 150 + 139 + 128 + 151 + 132 + 146 + 149 + 143 + 141
=
10
1414
= 141.4 cm
v) Number of girls having more height than the mean height
= 5 girls.
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