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CBSE Questions for Class 11 Commerce Economics Organisation Of Data Quiz 1 - MCQExams.com
CBSE
Class 11 Commerce Economics
Organisation Of Data
Quiz 1
Which is true?
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$$[(1/5)^{\circ} \, < \, (1/8^{\circ})]$$.
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$$[(1/5)^{\circ} \, > \, (1/8^{\circ})]$$.
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$$[(1/50) \, = \, (1/80)]$$.
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$$[(1/5) \, = \, (1/8)]$$.
Which one of the following represents the number $$8$$:
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0%
0%
0%
Explanation
In a frequency distance with classes $$0-10, 10-20$$ and so on, the size of class interval is $$10$$. lower limit of fourth class is
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$$40$$
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$$50$$
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$$20$$
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$$30$$
Explanation
Classes - $$0-10, 10-20, 20-30, 30-40$$
Hence, lower limit of fourth class is $$30$$
Count the tally marks
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$$4$$
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$$5$$
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$$6$$
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$$3$$
Explanation
Tally marks are given by counting total number of vertical and slant line.
Thus the count from the given data is $$5$$.
The size of the each class intervals is:
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$$5$$
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$$0$$
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$$10$$
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None of these
Explanation
The size of the each class intervals is the difference between the upper and lower limits of any class $$= 10-0 = 10.$$
Range of $$14, 12, 17, 18, 16$$ and $$x$$ is $$20$$. Find $$x$$ $$(x > 0)$$
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$$2$$
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$$28$$
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$$32$$
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Cannot be determined
Explanation
Let $$x$$ be the highest no. and here lowest no. is $$12$$
Since, Range $$=$$ Highest value $$-$$ Lowest value
$$\therefore 20 = x - 12 $$
$$\therefore x =32 $$
$$\therefore $$ Option $$C$$ is correct.
In an examination, $$10$$ students scored the following marks in Mathematics: $$35, 19, 28, 32, 63, 02, 47, 31, 13, 98$$. Its range is
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$$2$$
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$$96$$
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$$98$$
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$$50$$
Explanation
Range $$=$$ Maximum value of the variable $$-$$ Minimum value of the variable
$$= 98 - 2 = 96$$
The difference between upper and lower limit is called
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group
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class marks
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class size
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class internal
Explanation
Class size = Upper Limit- Lower limit
An orderly distribution of the raw data into certain specified categories is known as
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frequency distribution
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frequency
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Cumulative frequency
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Primary data
Explanation
Frequency Distribution
The definition of the frequency distribution is distributing the raw data in the specific categories in an order.
Data available in unorganized form is called
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out comes
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raw data
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class
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frequency
Explanation
Data available in
unorganized
form is called raw data
Which data information can be collected randomly?
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array
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primary
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secondary
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raw
Explanation
Raw data information can be collected randomly.
Example: Consider the height of $$10$$ students in a class given below:
$$55, 36 , 95, 73, 60 , 42 , 25 , 78 , 75 , 62$$
This data in this form is called raw data.
Size of the class $$180 - 195$$ is
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$$180$$
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$$195$$
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$$15$$
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$$-15$$
Explanation
Size of class $$= 195 - 180 = 15$$
The range of the data $$7, 13, 6, 25, 18, 20 , 16 $$ is _____
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$$13$$
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$$19$$
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$$20$$
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$$25$$
Explanation
The data is: $$7,13,6,25,18,20,16$$
Lowest value $$= 6$$
highest value $$= 25$$
Range $$=$$ Highest Value $$-$$ Lowest value $$= 25 - 6 = 19$$
Which one of the following groups has different class size from others?
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$$120 - 125$$
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$$243 - 249$$
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$$141.5 - 146.5$$
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$$315.5 - 320.5$$
Explanation
Class size $$=$$ Upper limit $$-$$ lower limit
All other classes have a class size $$= 5$$ except, $$243-249$$ which has a size of $$6$$
The marks obtained by $$5$$ students in a English test as given below:
$$55, 45, 70, 60, 50$$
The data in this form is called ______.
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primary data
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raw data
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arrayed data
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secondary data
Explanation
The marks obtained by $$5$$ students in a English test as given below:
$$55, 45, 70, 60, 50$$
The data in this form is called raw data. Since the given data are ungrouped and arranged randomly.
The heights of $$5$$ girls were measured in cm and results are as follows:
$$148, 145, 141, 140, 137$$
The data is in the form of _____.
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arrayed data
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processed data
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secondary data
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raw data
Explanation
The heights of $$5$$ girls were measured in cm and results are as follows:
$$148, 145, 141, 140, 137$$
The data is in the form of arrayed data.
Since the data are arranged in descending order.
The ungrouped data is also called as _____.
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array
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primary
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secondary
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raw
Explanation
The ungrouped data is also called as raw data.
Example: Consider the height of $$10$$ students in a class given below:
$$55 , 36 , 95 , 73 , 60 , 42 , 25 , 78 , 75 , 62$$
This is the ungrouped data or raw data for the height information of $$10$$ students.
The data are arranged in ascending order is called _____.
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raw data
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processed data
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arrayed data
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secondary data
Explanation
The data are arranged in ascending order is called arrayed data.
Example: The marks obtained by $$5$$ students in a Hindi test as given below:
$$45, 55, 70, 80, 100$$
The data are arranged in descending order is called _____.
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raw data
0%
processed data
0%
secondary data
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arrayed data
Explanation
The data are arranged in descending order is called arrayed data.
Example: The marks obtained by $$5$$ students in a Hindi test as given below:
$$100, 90, 85, 76, 65$$
Find the example of raw data.
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$$23, 12, 4, 5, 8, 10$$
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$$4, 5, 8, 12, 10, 23$$
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$$23, 10, 12, 8, 5, 4$$
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$$1, 2, 5, 7, 10, 12$$
Explanation
The first option data is an example of raw data.
Since the numbers are arranged randomly.
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