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Measures of Cen...

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  • Question 1
    1 / -0

    The following table shows the frequency distribution of advertisements on T.V.

    Duration (in sec.)$$25 - 30$$ $$30 - 35$$ $$35 - 40$$$$40 - 45$$$$45 - 50$$$$50 - 55$$
    No. of advertisements$$10$$$$32$$$$15$$$$9$$$$7$$$$2$$
    Obtain mean duration of an advertisement on T.V. by assumed mean method

  • Question 2
    1 / -0

    The following data have been arranged in ascending order of magnitude.
    $$63, 66, 69, x, x + 2, 76, 89$$ and $$103$$.
    If the median of the given data is $$71$$, find the value of $$x$$.

  • Question 3
    1 / -0

    The data is $$17, 26, 60, 45, 33, 32,29, 34$$ and $$56$$. If $$26$$ is replaced by $$62$$, then the new median is

  • Question 4
    1 / -0

    Number of calories (in' 00) consumed daily by a sample of 15 years old boys are given below.

    Calories1000 - 15001500 - 20002000 - 25002500 - 30003000 - 35003500 - 40004000 - 4500
    No. of boys513161827104
    Obtain mean calories consumed daily by a boy by step deviation method.

  • Question 5
    1 / -0

    The A.M. of the first ten odd numbers is

  • Question 6
    1 / -0

    Directions For Questions

    Find the mean of the following data:

    ...view full instructions

    Number of plants
    		0-2
    		2-4
    		4-6
    		6-8
    		8-10
    		10-12
    		12-14
    Number of houses
    		1
    		2
    		1
    		5
    		6
    		2
    		3
    mean is $$8.4$$
    Is it true or false?

  • Question 7
    1 / -0


    Class Interval
    		Frequency
    100-12
    		12
    120-140
    		14
    140-160
    		8
    160-180
    		6
    180-200
    		10
    mean is 145.20
    If true then enter $$1$$ and if false then enter $$0$$

  • Question 8
    1 / -0

    Find the mean marks from the following data:

    Marks
    		No. of students
    Below $$10$$
    		$$4$$
    Below $$20$$
    		$$10$$
    Below $$30$$
    		$$18$$
    Below $$40$$
    		$$28$$
    Below $$50$$
    		$$40$$
    Below $$60$$
    		$$70$$

  • Question 9
    1 / -0

    The following data shows that the age distribution of patients of malaria in a village during a particular month. Find the average age of the patients.

    Age (in years)
    		No. of cases
    5-14
    		6
    15-24
    		11
    25-34
    		21
    35-44
    		23
    45-54
    		14
    55-64
    		5
    65-74
    		3

  • Question 10
    1 / -0

    The mean of first five prime numbers is

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