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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. - Mathematics

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प्रश्न

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
  1. Draw a double bar graph using appropriate scale to depict the above data.
  2. How many students are there in Class VII?
  3. Which is the most preferred club by boys?
  4. Which is the least preferred club by girls?
  5. For which club the difference between boys and girls is the least?
  6. For which club is the difference between boys and girls the maximum?
आलेख
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उत्तर

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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अध्याय 3: Data Handling - Exercise [पृष्ठ ९१]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 7
अध्याय 3 Data Handling
Exercise | Q 87. | पृष्ठ ९१

संबंधित प्रश्न

The following chart gives the growth in height in terms of percentage of full height of boys and girls with their respective ages.

Age (in years) 8 9 10 11 12 13 14 15 16 17

18

Boys 72% 75% 78% 81% 84% 88% 92% 95% 98% 99% 100%
Girls 77% 81% 84% 88% 91% 95% 98% 99% 99.5% 100% 100%

Draw the line graph of above data on the same sheet and answer the following questions.

  1. In which year both the boys and the girls achieve their maximum height?
  2. Who grows faster at puberty (14 years to 16 years of age)?

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In a bar graph, each bar (rectangle) represents only one value of the numerical data.


The following bar graph shows the number of houses (out of 100) in a town using different types of fuels for cooking.

Read the bar graph and answer the following questions:

Scale: 1 unit length = 5 houses

  1. Which fuel is used in maximum number of houses?
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    From the above graph estimate the number of houses using electricity.

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  1. Draw a double bar graph choosing an appropriate scale.
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  1. Draw a bar graph to represent the above given information.
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  4. Find the ratio of the minimum sale to the maximum sale.
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  5. In how many subjects did Soni get more marks than Kunal? Which are those subjects?
  6. Who got more marks in S. Science and what was the difference of marks?
  7. In which subject the difference of marks was maximum and by how much?

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