Pie Charts

Q.

A number is increased by $20\%$ and then is decreased by $20\%$. Find the net increase or decrease percent?

Q.

A survey was made to find the type of music that a certain group of young people liked in a city. The above pie chart shows the findings of this survey.

(i) If 20 people liked classical music, how many young people were surveyed?

(ii) Which type of music is liked by the maximum number of people?

(iii) If a cassette company were to make 1000 CD’s, how many of each type would they make? [4 MARKS]

Q. Question 1
Comparison of parts of a whole may be done by a
(a) bar graph
(b) pie chart
(c) linear graph
(d) line graph

Q.

What are embedded charts ? Explain the different types of charts.

Q.

Representation of data in form of sectors of a circle is called ____ chart.

Q. In the pie chart, the numerical data is represented by the sectors of a .

1. square
2. triangle
3. rectangle
4. circle

Q. The sum of central angles for each component of a pie chart in degrees is ___.

1. 180
2. 720
3. 360
4. 90

Q.

Maria did a survey where she asked all the children in her school to name their favourite pet. The results are shown in the pie chart.

If 720 children said their favourite pet was a Dog, how many children said their favourite pet was a Rabbit?

1. 100

2. 150

3. 138

4. 140

Q. The content of the carbon dioxide in the air is 500 ppm(parts per million). What is the content of Oxygen in the air ?

1. 300ppm
2. 150ppm
3. 200ppm
4. None of these

Q.

$\text{The following table shows the percentages of buyers of four different brands of bathing soaps.}$

$\begin{array}{ccccc}\text{Brand}& A& B& C& D\\ \text{Percentage of buyers}& 20\%& 40\%& 25\%& 15\%\end{array}$

$\text{Represent the above data by a pie chart.}$

Q.

The circle-graph given here shows the expenses of a country on various sports during a particular year. Study the graph carefully and answer the questions given below it. How much percent more is spent on Hockey than that on Golf?

1. 80%

2. 75%

3. 50%

4. 10%

Q.

How much part of the circle we need to shade to show 25% data in the pie chart?

1. Secmi circle

2. 60 degree sector

3. 120 degree sector

4. A quarter

Q. Question 1(i)
A survey was made to find the type of music that a certain group of young people liked in a city.
The adjoining pie chart shows the findings of this survey.
From this pie chart, answer the following:

If 20 people liked classical music, how many young people were surveyed?

Q.

Question 98

The following data represents the different number of animals in a zoo. Prepare a pie chart for the given data.
$\begin{array}{cc}Animals& Numberofanimals\\ Deer& 42\\ Elephant& 15\\ Giraffe& 26\\ Reptiles& 24\\ Tiger& 13\end{array}$

Q.

7/12 of a circle is respresented by an activity on a pie chart. The central angle made by this sector will be

1. 180^o

2. 200^o

3. 80^o

4. 210^o

Q. The pie chart shows the number of fruits sold in a store. Given that the number of apples is 180 and number of oranges is 400, what is the number of pears sold in the fruit store?

1. 60
2. 140
3. 70
4. 200

Q. A pizza is cut into 6 equal pieces. After having a slice of pizza, the pizza left on the plate is shown below:

Which graphical method resembles this?

1. Bar Graph
2. Pie-Chart
3. Pictograph
4. Circle Graph

Q.

The following pie-chart represents the marks scored by a student. If he obtained 540 as total marks, then the difference in the marks obtained in Maths and English is _______.

1. 25

2. 35

3. 20

4. 15

Q. Why is pie chart most preferred type of bar graph than all others

Q. The measure of the central angle in a pie chart is

1. ${180}^o$
2. ${90}^o$
3. ${270}^o$
4. ${360}^o$

Q. Define

a) Bar graph

b) Pie graph

c) Line graph

d) Linear graph [2 MARKS]

Q. What is pie chat?

Q.

If you have more number of observations or large data, pie charts are very useful.

1. True

2. False

Q.

100 gms of a chicken dish has 75 gms of chicken, 20 gms of spices and 5 gms of salt in it. Draw a pie chart representing the given composition.
[2 MARKS]

Q.

The above graph shows the distribution of TV viewership for Zen TV channels in year 2012-13. Find the % distribution for entertainment.

1. 30

2. 40

3. 50

4. 60

Q.

The content of the carbon dioxide in the air is 500 ppm(parts per million). What is the content of Oxygen in the air ?

1. 150 ppm

2. 200 ppm

3. None of these

4. 300 ppm

Q.

From the given pie charts, find X (the percentage of people who like watching Movies).
Note: The percentage of people who like reading is 4% less than that of the people who like playing.

1. 25

2. 26

3. 27

4. 28

Q.

From the given pie charts, find X (the percentage of people who like Reading). The percentage of people who like movies is 4% less than that of the people who like playing.

1. 26

2. 25

3. 27

4. 28

Q. The following data represents the different number of animals in a zoo. Prepare a pie chart for the given data.
$\begin{array}{cc}Animals& Numberofanimals\\ Deer& 42\\ Elephant& 15\\ Giraffe& 26\\ Reptiles& 24\\ Tiger& 13\end{array}$
[4 marks]

Q.

Suppose you are the Principal of a school. There are a few rules for the allocation of students to their sections. 50% of students go to section A, 30% to section B and 20% to section C. There are 150 students in total. If you have to represent the allocation using a graphical method, which one of the following would you prefer?

1. Bar Graph

2. Pie Chart

3. Line Graph

4. Pictograph