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Find the mean of the distibution...

Find the mean of the distibution

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We, first find the class marks `x_(i)` of each class and then proceed as follows,

Therefore, mean `bar(x)=(sumf_(i)x_(i))/(sumf_(i))=(412.5)/(75)-5.5`
Hence, mean of the given distribution is 5.5
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NCERT EXEMPLAR ENGLISH-STATISTICS AND PROBABILITY-SHORT ANSWERS QUESTIONS
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  2. Calculate the mean of the scores of 20 students in a mathematics test

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  10. The following table show tha cumulative frequency distribution of mark...

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