For a frequency distribution of marks in statistics of 200 candidates grouped in intervals 1_5,6_10 etc the mean and the standard deviation were found to be 40 and 15 respectively.later it was discovered that the score 43 was misread as 53 in obtaining the frequency distribution .find the corrected mean and standard deviation
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For a frequency distribution of marks in statistics of 200 candidates grouped in intervals 1_5,6_10 etc the mean and the standard deviation were found to be 40 and 15 respectively.later it was discovered that the score 43 was misread as 53 in obtaining the frequency distribution .find the corrected mean and standard deviation
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