Graphical Representation of Data

IMPORTANT

Important Questions on Graphical Representation of Data

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IMPORTANT

Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 1

Shall we draw a frequency polygon for frequency distribution of discrete series?

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 2

Is it necessary to draw a histogram for drawing a frequency polygon?

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 3

The area of histogram of a data and its frequency polygon is the same. Reason how.

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 4

How do we complete the polygon when there is no class preceding the first class?

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 5

What does the sum of heights of all rectangles represent?

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 6

Which value decides the width of each rectangle in the histogram?

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 7

Class boundaries are taken on the ‘X’-axis. Why not class limits?

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 8

Observe the following histogram and answer the question.

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How many students are surveyed in total?

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 9

Observe the following histogram and answer the question.

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How many students watch TV for $5$ hours or more?

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 10

Observe the following histogram and answer the following question.

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Which group contains a maximum number of students?

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 11

Observe the following histogram and answer the following question.

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What information is being represented in the histogram?

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 12

Observe the following histogram for the given grouped frequency distribution.

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Class Interval (Marks)	Frequency (No. of Students)
$0 - 10$	$3$
$10 - 20$	$5$
$20 - 30$	$9$
$30 - 40$	$10$
$40 - 50$	$15$
$50 - 60$	$19$
$60 - 70$	$13$
$70 - 80$	$11$
$80 - 90$	$9$
$90 - 100$	$6$

Shall we interchange any two bars of the graph?

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 13

Observe the following histogram for the given grouped frequency distribution.

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Class Interval (Marks)	Frequency (No. of Students)
$0 - 10$	$3$
$10 - 20$	$5$
$20 - 30$	$9$
$30 - 40$	$10$
$40 - 50$	$15$
$50 - 60$	$19$
$60 - 70$	$13$
$70 - 80$	$11$
$80 - 90$	$9$
$90 - 100$	$6$

Width of all bars is same. What may be the reason?

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Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 14

Observe the following histogram for the given grouped frequency distribution.

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Class Interval (Marks)	Frequency (No. of Students)
$0 - 10$	$3$
$10 - 20$	$5$
$20 - 30$	$9$
$30 - 40$	$10$
$40 - 50$	$15$
$50 - 60$	$19$
$60 - 70$	$13$
$70 - 80$	$11$
$80 - 90$	$9$
$90 - 100$	$6$

In what proportion the height of the bars are drawn?

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IMPORTANT

Frequency Distribution Tables and Graphs>Graphical Representation of Data> Q 15

Observe the following histogram for the given grouped frequency distribution.

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Class Interval (Marks)	Frequency (No. of Students)
$0 - 10$	$3$
$10 - 20$	$5$
$20 - 30$	$9$
$30 - 40$	$10$
$40 - 50$	$15$
$50 - 60$	$19$
$60 - 70$	$13$
$70 - 80$	$11$
$80 - 90$	$9$
$90 - 100$	$6$