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Statistics Test...

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  • Question 1
    1 / -0

    Below is given frequency distribution of no. of packages received at a post office per day.

    No. of packages10 - 2020 - 3030 - 4040 - 5050 - 6060 - 70
    No. of days2816243020
    Find modal number of packages received by the post office per day.

  • Question 2
    1 / -0

    Below is given frequency distribution of I.Q. (Intelligent Quotient) of 80 candidates.

    I.Q.70 - 8080 - 9090 - 100100 - 110110 - 120120 - 130130 - 140
    No. of Candidates71620171172
    Find median I.Q. of candidates

  • Question 3
    1 / -0

    Following s the frequency distribution of diameter of neem trees measured at 1 meter height from ground

    Diameter (in cm)Number of trees
    Below 250
    Below 5026
    Below 7568
    Below 100203
    Below 125215
    Below 150220
     Find the median.

  • Question 4
    1 / -0

    Find the median of the following data:
    $$5, 7, 9, 11, 15, 17, 2, 23$$ and $$19$$

  • Question 5
    1 / -0

    Following table gives frequency distribution of time (in minutes) taken by a person in watching T.V. on a day.

    Time (in min)30 - 4040 - 5050 - 6060 - 7070 - 8080 - 9090 -
    100
    No. of persons461914872
    Obtain modal time taken for watching a T.V. by persons on a day.

  • Question 6
    1 / -0

    An automatic filling machine was tested for its performance. A sample of 100 filled packets generated the data, which is classified as follows :

    Weight (in gm)485 - 490490 - 495495 - 500500 - 505505 - 510510 - 515
    No. of packets12182022244
    Draw histogram and hence find the mode of the weight of packets.

  • Question 7
    1 / -0

    A life insurance agent found the following data for distribution of ages of 100 policy holders. Calculate the median age, if policies are only given to persons having age 18 years onwards but less than 60 years.

    Age in years
    		No. of policy holders
    Below 20
    		2
    Below 25
    		6
    Below 30
    		24
    Below 35
    		45
    Below 40
    		78
    Below 45
    		89
    Below 50
    		92
    Below 55
    		98
    Below 60
    		100

  • Question 8
    1 / -0

    If the median of the following data is 40 then the value of p is

    Class
    		0-10
    		10-30
    		30-60
    		60-80
    		80-90
    Frequency
    		5
    		15
    		30
    		p
    		2

  • Question 9
    1 / -0

    The median for the following distibution class

    Class0-1010-2020-3030-4040-5050-60
    Frequency51020785
    is

  • Question 10
    1 / -0

    $$100$$ surnames were randomly picked up from a local telephone directry and the frequency distribution of the number of letters in the English alphabets in the surnames was obtained as follows

    No. of letters
    		$$1-4$$
    		$$4-7$$
    		$$7-10$$
    		$$10-13$$
    		$$13-16$$
    		$$16-19$$
    No. of surnames
    		$$6$$$$30$$
    		$$40$$
    		$$16$$
    		$$4$$
    		$$4$$
    Find the median and mean number of letters in the surnames.

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