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Measures of Cen...

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  • Question 1
    1 / -0

    Below is given frequency distribution of marks (out of 100) obtained by the students.
    Calculate mean marks scored by a student.

    Marks0 - 1010 - 2020 - 3030 - 4040 - 50 50 - 6060 - 7070 - 8080 - 9090 - 100
    No. of Students35710121512628

  • Question 2
    1 / -0

    Find the mode of the following:

    $$18,14,22,23,14,18,17,28,28,14,25,14$$

  • Question 3
    1 / -0

    If $$25$$ is the arithmetic mean of $$ X$$ and $$46,$$ then find $$X.$$

  • Question 4
    1 / -0

    Following table gives age groupwise distribution of people suffering from 'Asthama' due to air pollution in certain city. Find mean age of person suffering from 'Asthama' .

    Age (in years)7 - 1111 - 1515 - 1919 - 2323 - 2727 - 3131 - 3535 - 39
    No. of People 5 9 13 21 16 15 12  9

  • Question 5
    1 / -0

    Following table gives frequency distribution of milk (in litres) given per week by 50 cows.
    Find average (mean) amount of milk given by a cow by 'shift of origin method'.

    Milk (in litres)24 - 3030 - 3636 - 4242 - 4848 - 5454 - 6060 - 6666 - 72 
    		72 - 7878 - 8484 - 90
    No. of cows13855584623

  • Question 6
    1 / -0

    The following observation are arranged in ascending order. If the median of the data is $$17$$, find $$x$$ if the observations are $$6, 8, 9, 15, x,x + 2, 21, 22, 25, 29.$$

  • Question 7
    1 / -0

    Below is given frequency distribution of dividend in percentage declared by 120 companies.

    Dividend (in %)10 - 1920 - 2930 - 3940 - 4950 - 59 60 -
    69    		70 - 79 
    No. of Companies515284215123
    Obtain mean dividend declared by a company by step deviation method.

  • Question 8
    1 / -0

    Find the median of:
    $$25,16,26,16,32,31,19,28$$ and $$35$$

  • Question 9
    1 / -0

    Find the median of the following data:
    $$18,19, 20, 23, 22, 20, 17, 19, 25$$ and $$21$$

  • Question 10
    1 / -0

    What is the mean of first 8 whole numbers?

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