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Question
The students of Class VII have to choose one club from Music, Dance, Yoga, Dramatics, Fine arts and Electronics clubs. The data given below shows the choices made by girls and boys of the class. Study the table and answer the questions that follow:
| Clubs | Music | Dance | Yoga | Dramatics | Fine Arts | Electronics |
| Girls | 15 | 24 | 10 | 19 | 27 | 21 |
| Boys | 12 | 16 | 8 | 17 | 11 | 30 |
- Draw a double bar graph using appropriate scale to depict the above data.
- How many students are there in Class VII?
- Which is the most preferred club by boys?
- Which is the least preferred club by girls?
- For which club the difference between boys and girls is the least?
- For which club is the difference between boys and girls the maximum?
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Solution
a. Steps to construct the bar graph are as follows:
Step I: We draw two lines perpendicular to each other on a graph paper and call them horizontal and vertical axes.
Step II: Along the horizontal axis, OX mark the clubs and along the vertical axis, OY mark the number of boys and girls.
Step III: We choose a suitable scale to determine the heights of bars. Here, we choose the scale as 1 small division to represent 2.
Step IV: First, we draw the bars for girls and then bars for boys for different years. Bars for girls and boys are shaded separately and the shading is shown in the top right corner of the graph paper
b. Total students in class VII
= 15 + 12 + 24 + 16 + 10 + 8 + 19 + 17 + 27 + 11 + 21 + 30
= 210
c. From the given data, we can say that most preferred club by boys is Electronics.
d. From the given data, we can say that least preferred club by girls is Yoga.
e. It is clear from the given data in Yoga and Dramatics, the difference between boys and girls is the least, i.e. (19 – 17) = 2
f. It is clear from the given data in Fine Arts the difference between boys and girls is maximum, i.e. (27 – 11) = 16
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