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Statistics Test...

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  • Question 1
    1 / -0

    The distance (in km) of $$40$$ engineers from their residence to their place of work were found as follows:
    $$5, 3, 10, 20, 25, 11, 13, 7, 12, 31, 19, 10, 12, 17, 18, 11, 32, 17, 16, 2, 7, 9, 7, 8,$$

    $$3, 5, 12, 15, 18, 3, 12, 14, 2, 9, 6, 15, 15, 7, 6, 12$$
    How many engineers travelled distance more than $$14$$ and less than $$26$$?

  • Question 2
    1 / -0

    Directions For Questions

    Use the table given below to find:
    Class Interval
    		Frequency
    $$30-34$$
    		$$7$$
    $$35-39$$
    		$$10$$
    $$40-44$$
    		$$12$$
    $$45-49$$
    		$$13$$
    $$50-54$$
    		$$8$$
    $$55-59$$
    		$$4$$

    ...view full instructions

    The class mark of the third class is:

  • Question 3
    1 / -0

    Directions For Questions

    The table, given below, shows the frequency distribution of the weekly wages of the employees of a company:
    Weekly wages (in Rs.)Number of empolyees
    $$800 - 899$$
    $$900 - 999$$
    $$1000 - 1099$$
    $$1100 - 1199$$
    $$1200 - 1299$$    		$$22$$
    $$27$$
    $$23$$
    $$18$$
    $$15$$

    ...view full instructions

    Find the class mark of the first class.

  • Question 4
    1 / -0

    The blood groups of 30 students of class VIII are recorded as follows:
    $$A,B,O,O,AB,O,A,O,B,A,O,B,A,O,O,$$
    $$A,AB,O,A,A,O,O,AB,B,A,O,B,A,B,O.$$
    Which is the most common and which is the rarest blood group among these students?

    Answer is in form of  (Rarest, Common)

  • Question 5
    1 / -0

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

  • Question 6
    1 / -0

    The horizontal line in a bar graph is called:

  • Question 7
    1 / -0

    The arithmetic mean of first ten natural numbers is

  • Question 8
    1 / -0

    Directions For Questions

    Study the following frequency table and choose the appropriate answer :
    Class IntervalsFrequency
    $$0-10$$$$6$$
    $$10-20$$$$2$$
    $$20-30$$$$13$$
    $$30-40$$$$17$$
    $$40-50$$$$11$$
    $$50-60$$$$4$$
    $$60-70$$$$8$$
    $$70-80$$$$7$$

    ...view full instructions

    The class-mark of class $$50-60$$ is:

  • Question 9
    1 / -0

    The range of $$15, 14, x, 25, 30, 35$$ is $$23$$. Find the least possible value of $$x$$.

  • Question 10
    1 / -0

    The following marks were obtained by the students in a test
    $$81, 72, 90, 90, 86, 85, 92, 70, 71, 83, 89, 95, 85, 79, 62$$.
    What is the range of the marks obtained?

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