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The representation of data with bars of uniform width is called ______. - Mathematics

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प्रश्न

The representation of data with bars of uniform width is called ______.

रिक्त स्थान भरें
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उत्तर

The representation of data with bars of uniform width is called bar graph.

Explanation:

The representation of the data in the form of rectangles (bars) of uniform width is called a bar graph.

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अध्याय 3: Data Handling - Exercise [पृष्ठ ७४]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 7
अध्याय 3 Data Handling
Exercise | Q 27. | पृष्ठ ७४

संबंधित प्रश्न

Read the bar graph (see the given figure) which shows the number of books sold by a bookstore during five consecutive years and answer the questions that follow:

  1. About how many books were sold in 1989? 1990? 1992?
  2. In which year were about 475 books sold? About 225 books sold?
  3. In which years were fewer than 250 books sold?
  4. Can you explain how you would estimate the number of books sold in 1989?

The performance of students in 1st Term and 2nd Term is given. Draw a double bar graph choosing appropriate scale and answer the following:

Subject English Hindi Maths Science S. science
1st Term (M.M. 100) 67 72 88 81 73
2nd Term (M.M. 100) 70 65 95 85 75
  1. In which subject, has the child improved his performance the most?
  2. In which subject is the improvement the least?
  3. Has the performance gone down in any subject?

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)?

In a bar graph, bars of ______ width can be drawn horizontally or vertically with ______ spacing between them.


Read the bar graph given below and answer the following questions:

Scale: 1 unit = 50 students

  1. What information is given by the bar graph?
  2. In which year is the number of students maximum?
  3. In which year is the number of students twice as that of 2001 – 02?
  4. In which year did the number of students decrease as compared to previous year?
  5. In which year is the increase in number of students maximum as compared to the previous year?

Scale: 1 unit length = 200 km

Prepare a pictograph of the data by taking a suitable symbol to represent 200 kilometers.


Study the bar graph given below and answer the questions that follow:

  1. What information is depicted from the bar graph?
  2. In which subject is the student very good?
  3. Calculate the average marks of the student.
  4. If 75 and above marks denote a distinction, then name the subjects in which the student got distinction.
  5. Calculate the percentage of marks the student got out of 500.

Observe the following data:

Government School, Chandpur
Daily Attendance   Date: 15.4.2009
Class Total Students Number of Students
Present on that Day
VI 90 81
VII 82 76
VIII 95 91
IX 70 65
X 63 62
  1. Draw a double bar graph choosing an appropriate scale. What do you infer from the bar graph?
  2. Which class has the maximum number of students?
  3. In which class, the difference of total students and number of students present is minimum?
  4. Find the ratio of number of students present to the total number of students of Class IX.
  5. What per cent of Class VI students were absent?

The marks out of 100 obtained by Kunal and Soni in the Half Yearly Examination are given below:

Subjects English Hindi Maths Science S. Science Sanskirt
Kunal 72 81 92 96 64 85
Soni 86 89 90 82 75 82
  1. Draw a double bar graph by choosing appropriate scale.
  2. Calculate the total percentage of marks obtained by Soni.
  3. Calculate the total percentage of marks obtained by Kunal.
  4. Compare the percentages of marks obtained by Kunal and Soni.
  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?

The table below compares the population (in hundreds) of 4 towns over two years:

Towns A B C D
2007 2900 6400 8300 4600
2009 3200 7500 9200 6300

Study the table and answer the following questions:

  1. Draw a double bar graph using appropriate scale to depict the above information.
  2. In which town was the population growth maximum?
  3. In which town was the population growth least?

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