A survey regarding the heights in (cm) of 51 girls of class X of a school was
conducted and the following data was obtained Find the median height and
the mean using the formulae
Number of Girls
11
Height (in cm)
Less than 140
Less than 145
Less than 150
Less than 155
Less than 160
Less than 165
29
40
46
51
i want to know how to find mean plss
Answers
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Answer:
mean= sum of observation ÷ no of observation
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Step-by-step explanation:
the mean for a population can be found by dividing ∑mf by N, where m is the midpoint of the class and f is the frequency. As a result, the formula μ=∑mf/N can be written to summarize the steps used to determine the value of the mean for a set of grouped data.
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