A The following table gives the number of children grouped according to their favourite subjects-Draw a bar graph using a suitable scale- -4 MARKS- begin array - - hlineSubject - No- of Children IWhlineEnglish - 32 Whline Hindi - 18 WhlineMathematics - 28 WhlineScience - 40 WhlineHistory - 36 Whline Geography - 26 Whlineb According to the graph- in which month is the number of people attending mass prayers maximum and in which month is the number of people attending lunch minimum-

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Standard VII

Mathematics

Double Bar Graphs

a The followi...

Question

(a) The following table gives the number of children grouped according to their favourite subjects :

Draw a bar graph using a suitable scale. [4 MARKS]

$\begin{matrix} S u b j e c t & N o . o f C h i l d r e n E n g l i s h & 32 H i n d i & 18 M a t h e m a t i c s & 28 S c i e n c e & 40 H i s t o r y & 36 G e o g r a p h y & 26 \end{matrix}$

(b) According to the graph, in which month is the number of people attending mass prayers maximum and in which month is the number of people attending lunch minimum?

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Solution

Each part: 2 Marks

(a) Scale: x axis - Subjects
y axis - Number of children; 1 cm = 5 units

Bar graph :

(b)

As seen from the graph, the month in which the maximum number of people attended the mass prayer is in April because the blue bar is longest for the month of April. Similarly, the month in which the minimum number of people attended lunch is in March because the orange bar is shortest for the month of March.

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In which of the months, the number of people attending the mass prayers is maximum and the number of people attending lunch is minimum?

Q. Given double bar graph is representing the people in church attending the mass prayer and lunch for 4 different month.

Which month has the maximum number of people for both mass prayer and lunch?

“You are William Playfair!!!” Jack exclaimed with super surprise. “Yes, I am”, he replied. While Jack was still in the state of astonishment, William asked him, “Can you help me again? I have a list of the number of people who have attended the mass prayers and lunch offered at the church. But I am facing difficulty comparing them. Can you help me to compare them easily?” According to his list, then, Jack drew a bar chart (which William doesn’t know anything about). It came as:

Looking at this, William exclaimed - “What a nice chart! We can easily compare no. of people. Thanks” Then Jack smiled and said- “If it’s that easy, tell me in which month no. of people attending the mass prayers is maximum and in which month no. of people attending lunch is minimum?” The correct answer is –

“You are William Playfair!!!” Jack exclaimed with super surprise. “Yes, I am”, he replied. While Jack was still in the state of astonishment, William asked him, “Can you help me again? I have a list of number of people who have attended the Mass and lunch offered at the church for four months. Can you help me compare this data?” According to his list, then, Jack drew a bar chart (which William doesn’t know anything about). It came as:

Looking at this, William exclaimed - “What a nice chart! We can easily compare the number of people. Thanks” Then Jack smiled and said- “If it’s that easy, tell me in which month the number of people attending Mass is maximum and in which month the number of people attending lunch is minimum?” The correct answer is –

$\begin{matrix} C o l o u r s & N o . o f p e o p l e B l u e & 18 G r e e n & 9 R e d & 6 Y e l l o w & 3 T o t a l & 36 \end{matrix}$

Draw a pie chart showing the given information. The table shows the colours preferred by a group of people. Calculate the respective proportion of each colour.
[3 MARKS]

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