MPESB Group · Mathematics

Statistics

Mean, median, mode, frequency distribution.

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  • Q1 · Statistics · EASY

    The mean of 5 numbers is 20. If one number 16 is removed, what is the mean of the remaining 4 numbers?

  • Q2 · Statistics · EASY

    Find the median of the following data: 15, 22, 18, 30, 25, 20, 28

  • Q3 · Statistics · MEDIUM

    The marks obtained by 10 students are: 35, 42, 35, 50, 35, 48, 42, 35, 50, 45. What is the mode of this data?

  • Q4 · Statistics · MEDIUM

    The frequency distribution of marks of 50 students is given below: Marks: 10-20, 20-30, 30-40, 40-50 Frequency: 8, 15, 20, 7 What is the modal class?

  • Q5 · Statistics · HARD

    The mean of 20 observations is 45. Later it was found that two observations were wrongly recorded as 30 and 40 instead of 50 and 60. What is the correct mean?

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