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The mean and standard deviation of marks...

The mean and standard deviation of marks obtained by 50 students of a class in three subjects. Mathematics, Physics and Chemistry are given below.

Which of the three subject shows the highest variability in marks and which shows the lowest ?

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The correct Answer is:
` = 48.89`
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SUBHASH PUBLICATION-STATISTICS AND PROBABILITY -TWO MARKS QUESTIONS WITH ANSWERS
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  2. Compute the mean deviation about the mean for the following data.

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  4. Find the M.D. about mean

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  7. Find the mean for the following data :

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  9. Find the mean and standard deviation using short - cut method.

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  10. Find variance and standard deviation for the following data

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  11. Find the mean and variance for the following frequency distributions

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  12. Find variance and standard deviation for the following data

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