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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.
- In which year both the boys and the girls achieve their maximum height?
- Who grows faster at puberty (14 years to 16 years of age)?
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उत्तर
- In 18 yr, the boys and in 17 yr, the girls achieve their maximum height.
- Boys grows faster the girls during puberty.
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संबंधित प्रश्न
Number of children in six different classes are given below. Represent the data on a bar graph.
| Class | Fifth | Sixth | Seventh | Eighth | Ninth | Tenth |
| Number of children | 135 | 120 | 95 | 100 | 90 | 80 |
- How would you choose a scale?
- Answer the following questions:
- Which class has the maximum number of children? And the minimum?
- Find the ratio of students of class sixth to the students of class eight.
Consider this data collected from a survey of a colony.
| Favourite sport | Cricket | Basket Ball | Swimming | Hockey | Athletics |
| Watching | 1240 | 470 | 510 | 430 | 250 |
| Participating | 620 | 320 | 320 | 250 | 105 |
- Draw a double bar graph choosing an appropriate scale. What do you infer from the bar graph?
- Which sport is most popular?
- Which is more preferred, watching or participating in sports?
The following table shows the number of Buses and Trucks in nearest lakh units. Draw percentage bar-diagram. (Approximate the percentages to the nearest integer)
| Year | No of trucks | No of buses |
| 2005-2006 2007-2008 2008-2009 2009-2010 |
47 56 60 63 |
9 13 16 18 |
In a bar graph, bars of uniform width are drawn vertically only.
The following bar graph represents the data for different sizes of shoes worn by the students in a school.
Read the graph and answer the following questions.
Scale: 1 unit length = 50 students
- Find the number of students whose shoe sizes have been collected.
- What is the number of students wearing shoe size 6?
- What are the different sizes of the shoes worn by the students?
- Which shoe size is worn by the maximum number of students?
- Which shoe size is worn by minimum number of students?
- State whether true or false:
The total number of students wearing shoe sizes 5 and 8 is the same as the number of students wearing shoe size 6.
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:
- What information is depicted from the bar graph?
- In which subject is the student very good?
- Calculate the average marks of the student.
- If 75 and above marks denote a distinction, then name the subjects in which the student got distinction.
- Calculate the percentage of marks the student got out of 500.
Study the double bar graph and answer the questions that follow:
- What information does the double bar graph represent?
- Find the total number of boys in all sections of Class VII.
- In which sections, the number of girls is greater than the number of boys?
- In which section, the number of boys is the maximum?
- In which section, the number of girls is the least?
In a public library, the following observations were recorded by the librarian in a particular week:
| Days | Mon | Tues | Wed | Thurs | Fri | Sat |
| Newspaper Readers |
400 | 600 | 350 | 550 | 500 | 350 |
| Magazines Readers |
150 | 100 | 200 | 300 | 250 | 200 |
- Draw a double bar graph choosing an appropriate scale.
- On which day, the number of readers in the library was maximum?
- What is the mean number of magazine readers?
Below is a list of 10 tallest buildings in India.
This list ranks buildings in India that stand at least 150 m (492 ft.) tall, based on standard height measurement. This includes spires and architectural details but does not include antenna marks. Following data is given as per the available information till 2009. Since new buildings are always under construction, go on-line to check new taller buildings.
Use the information given in the table about sky scrapers to answer the following questions:
| Name | City | Height | Floors | Year |
| Planet | Mumbai | 181 m | 51 | 2009 |
| UB Tower | Bengaluru | 184 m | 20 | 2006 |
| Ashok Towers | Mumbai | 193 m | 49 | 2009 |
| The Imperial I | Mumbai | 249 m | 60 | 2009 |
| The Imperial II | Mumbai | 249 m | 60 | 2009 |
| RNA Mirage | Mumbai | 180 m | 40 | 2009 |
| Oberoi Woods Tower I | Mumbai | 170 m | 40 | 2009 |
| Oberoi Woods Tower II | Mumbai | 170 m | 40 | 2009 |
| Oberoi Woods Tower III | Mumbai | 170 m | 40 | 2009 |
| MVRDC | Mumbai | 156 m | 35 | 2002 |
(a) Find the height of each storey of the three tallest buildings and write them in the following table:
| Building | Height | Number of storeys | Height of each storey |
(b) The average height of one storey for the buildings given in (a) is ______.
(c) Which city in this list has the largest percentage of skyscrapers? What is the percentage?
(d) What is the range of data?
(e) Find the median of the data.
(f) Draw a bar graph for given data.
