• 2021 December(E23) Math Question 31

    Statistics

    - Mean, Median

    Statistics (Mean, Median, Mode, Standard Deviation)
    Choice B
    Total  students=25Total\; students=25
    Median  score=80Median\; score=80

    No 2 students got the same test score.

    The median for an odd number of terms is

    Median=({n+1}{2}){th}Median=(\frac\{n+1\}\{2\})^\{th\}

    The median of 25 terms is

    Median=({25+1}{2}){th}=13{th}  termMedian=(\frac\{25+1\}\{2\})^\{th\}=13^\{th\}\; term

    As students got distinct scores so all the 25-13=12 students above 13th got scores greater than 80. Therefore, choice B is correct.

    Skills you are tested for:

    Was this explanation helpful?

    • Comments

    To leave a comment,