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Biology marks obtained by 91 students in a wst an copr. distribution. Calculate the following values (a) mean, median and mode, (b) standard deviation, (c)

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Biology marks obtained by 91 students in a wst an copr. distribution. Calculate the following values (a) mean, median and mode, (b) standard deviation, (c) interquartile range, (d) value of a such that 20% of the students scored more than a marks. (e) Comment on the skewness of the distribution. (f) Which measure of location best describes the set of data? Give a reason

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