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Statistics Test...

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  • Question 1
    1 / -0

    The mean of the following data is $$18.75$$ then the value of $$p$$ :

    Class mark $$(x_i)$$
    $$10$$
    $$15$$
    $$p$$
    $$25$$
    $$30$$
    Frequency $$(f_i)$$
    $$5$$
    $$10$$
    $$7$$
    $$8$$
    $$2$$

  • Question 2
    1 / -0

    The median and mode of a frequency distribution are 525 and 500 then mean of same frequency distribution is-

  • Question 3
    1 / -0

    The mode of the following data is $$85.7$$. Find the missing frequency in it.

    Size
    Frequency
    45-55
    7
    55-65
    12
    65-75
    17
    75-85
    f
    85-95
    32
    95-105
    6
    105-115
    10

  • Question 4
    1 / -0

    An incomplete distribution is given below:
    Variable
    Frequency
    $$10-20$$
    $$12$$
    $$20-30$$
    $$30$$
    $$30-40$$
    $$f_1$$
    $$40-50$$
    $$65$$
    $$50-60$$
    $$f_2$$
    $$60-70$$
    $$25$$
    $$70-80$$
    $$18$$
    If median value is $$46$$ and the total number of items is $$230$$.
    Find the missing frequencies $$f_1$$ and $$f_2$$.

  • Question 5
    1 / -0

    If the median of the following frequency distribution is $$32.5$$, find the missing frequencies.

    Class interval
    Frequency
    0-10
    $$f_1$$
    10-20
    5
    20-30
    9
    30-40
    12
    40-50
    $$f_2$$
    50-60
    3
    60-70
    2
    Total
    40

  • Question 6
    1 / -0

    The following distribution gives the state-wise teacher student ratio in higher secondary schools of India. Find the mode and mean of this data. Interpret the two measures.

    No. of students per teacher
    No. of state/ U.T.
    15-20
    3
    20-25
    8
    25-30
    9
    30-35
    10
    35-40
    3
    40-45
    0
    45-50
    0
    50-55
    2

  • Question 7
    1 / -0

    The following tables gives the ages of the patients admitted in a hospital during a year.

    Age (in years)
    No. of patients
    $$5-15$$
    $$6$$
    $$15-25$$
    $$11$$
    $$25-35$$
    $$21$$
    $$35-45$$
    $$23$$
    $$45-55$$
    $$14$$
    $$55-65$$
    $$5$$
    Find the mode and the mean of the data

  • Question 8
    1 / -0

    The given distribution shows the number of runs scored by some top batsmen of the world in one day international cricket matches:

    Runs scored
    No. of batsman
    3000-4000
    4
    4000-5000
    18
    5000-6000
    9
    6000-7000
    7
    7000-8000
    6
    8000-9000
    3
    9000-10000
    1
    10000-11000
    1
    Find the mode of the data

  • Question 9
    1 / -0

    The following distribution gives the state-wise teacher-student ratio in higher secondary schools of  India. Find the mode and mean of this data. 

    No. of students per teacher
    No. of state/U.T.
    15-20
    3
    20-25
    8
    25-30
    9
    30-35
    10
    35-40
    3
    40-45
    0
    45-50
    0
    50-55
    2

  • Question 10
    1 / -0

    The following table gives the distribution of the life time of 400 neon lamps:

    Life Time (in hours)
    No. of lamps
    1500-2000
    14
    2000-2500
    56
    2500-3000
    60
    3000-3500
    85
    3500-4000
    74
    4000-4500
    62
    4500-5000
    48
    Find the median life-time of a lamp.

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