Find the median from the following data.. Marks Below 10, Below 20, Below 30 Below 40 Below 50 Below 60 Below 70 Below 80.. No of students 1

Question

Find the median from the following data.. Marks Below 10, Below 20, Below 30 Below 40 Below 50 Below 60 Below 70 Below 80.. No of students 12, 32, 57, 80, 92, 116, 164, 200…. Plz help it’s urgent ​

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Adalyn 3 weeks 2021-10-04T00:40:55+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-10-04T00:42:51+00:00

    Answer:

    FIRST MAKE A TABLE AS SHOWN BELOW:

    MARKS. NO.OF STUDENTS(F) C.F

    BELOW 10. 12. 12

    10-20. 32. 44

    20-30. 57. 101

    30-40. 80. 181

    40-50. 92. 273

    50-60. 116. 389

    60-70. 164. 553

    70-80. 200. 753

    Step-by-step explanation:

    MEDIAN= L+(N/2-CF/F)*H

    There are 8 given numbers which is even so

    n=8/2=4

    So we have to deal with 4th number.

    Now,

    L=30

    N=TOTAL NO.OF STUDENTS=753

    N/2=376.5

    CF=101

    F=80

    H=10

    NOW MEDIAN= 30+(376.5-101/80)*10

    =30+(275.5/80)*10

    =30+(2755/80*10)*10. (TO REMOVE DECIMAL WE MULTIPLY IT WITH 10)

    30+34.437=64.437

    MEDIAN=64.437

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