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InterviewSolution
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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 subjects shows the highest variability in marks and which shows the lowest? |
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Answer» Coefficient of variation in maths `=(sigma)/x xx 100=12/42xx100=28.57` Coefficient of variation in physics `=(sigma)/x xx 100=15/32xx100=46.875` Coefficient of variation in chemistry `=(sigma)/x xx 100=20/40.9xx 100=48.89` Therefore, chemistry shows highest variability and maths shows lowest variability. |
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