English

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

Advertisements
Advertisements

Question

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)?
Graph
Advertisements

Solution

  1. In 18 yr, the boys and in 17 yr, the girls achieve their maximum height.
  2. Boys grows faster the girls during puberty.
shaalaa.com
  Is there an error in this question or solution?
Chapter 12: Introduct To Graphs - Exercise [Page 391]

APPEARS IN

NCERT Exemplar Mathematics Exemplar [English] Class 8
Chapter 12 Introduct To Graphs
Exercise | Q 74. | Page 391

RELATED QUESTIONS

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?

Practice time: Afterschool

Ask 10 of your friends about what they like to do most after school.

What they like to do
after school
Number of children
Watching TV  
Playing football  
Reading storybooks  
   
   
   

Comparison of parts of a whole may be done by a ______.


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


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.

The following table shows the average intake of nutrients in calories by rural and urban groups in a particular year. Using a suitable scale for the given data, draw a double bar graph to compare the data.

Foodstuff Rural Urban
Pulses 35 49
Leafy vegetables 14 21
Other vegetables 51 89
Fruits 35 66
Milk 70 250
Fish and flesh floods 10 22
Fats and Oils 9 35
Sugar/Jaggery 19 31

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?

Observe the given data:

Days of
the week
Mon Tues Wed Thurs Fri Sat
Number of
Mobile Phone
Sets Sold
50 45 30 55 27 60
  1. Draw a bar graph to represent the above given information.
  2. On which day of the week was the sales maximum?
  3. Find the total sales during the week.
  4. Find the ratio of the minimum sale to the maximum sale.
  5. Calculate the average sale during the week.
  6. On how many days of the week was the sale above the average sales?

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.


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?

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×