Jump to

Exercises in Chapter 3 data handling Grade 7

Questions in Data Handling - Exercise

**Observe the following data:**

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 |

**What percentage of class VI students were absent?**

**Observe the following data:**

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 |

**In which class, the difference of total students and number of students present is minimum?**

**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 | Sanskrit |
---|---|---|---|---|---|---|

Kunal | 72 | 81 | 92 | 96 | 64 | 85 |

Soni | 86 | 89 | 90 | 82 | 75 | 82 |

**In how many subjects did Soni get more marks than Kunal?**

**Observe the following data:**

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 |

**Find the ratio of number of students present to the total number of students of class IX.**

**Observe the following data:**

Days of the Week | Numbers of Mobile Phone Sets Sold |
---|---|

Mon | 50 |

Tues | 45 |

Wed | 30 |

Thurs | 55 |

Fri | 27 |

Sat | 60 |

On which all days of the week was the sale above the average sales?

**Observe the following data:**

Days of the Week | Numbers of Mobile Phone Sets Sold |
---|---|

Mon | 50 |

Tues | 45 |

Wed | 30 |

Thurs | 55 |

Fri | 27 |

Sat | 60 |

**Find the total sales during the week.
**

**Observe the following data:**

Days of the Week | Numbers of Mobile Phone Sets Sold |
---|---|

Mon | 50 |

Tues | 45 |

Wed | 30 |

Thurs | 55 |

Fri | 27 |

Sat | 60 |

**Calculate the average sale during the week.**

**Observe the following data:**

Days of the Week | Numbers of Mobile Phone Sets Sold |
---|---|

Mon | 50 |

Tues | 45 |

Wed | 30 |

Thurs | 55 |

Fri | 27 |

Sat | 60 |

**On which day of the week was the sales maximum?**

**Observe the following data:**

Days of the Week | Numbers of Mobile Phone Sets Sold |
---|---|

Mon | 50 |

Tues | 45 |

Wed | 30 |

Thurs | 55 |

Fri | 27 |

Sat | 60 |

**Find the ratio of the minimum sale to the maximum sale.**

Below is a list of 10 tallest buildings in India.

This list ranks buildings in India that stand atleast 150 m (492 ft.) tall, based and standard height measurement. This includes spires and architectural details but does not include antenna marks. Following data in given as per the available information till 2009. Since, new buildings are always under construction, go online to check new taller buildings.

Name | City | Height | Floors | Year |
---|---|---|---|---|

Planet | Mumbai | 181m | 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 | 50 | 2002 |

Find the median of the data.

Below is a list of 10 tallest buildings in India.

This list ranks buildings in India that stand atleast 150 m (492 ft.) tall, based and standard height measurement. This includes spires and architectural details but does not include antenna marks. Following data in given as per the available information till 2009. Since, new buildings are always under construction, go online to check new taller buildings.

Name | City | Height | Floors | Year |
---|---|---|---|---|

Planet | Mumbai | 181m | 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 | 50 | 2002 |

Which city in this list has the largest percentage of skyscrapers?

Below is a list of 10 tallest buildings in India.

This list ranks buildings in India that stand atleast 150 m (492 ft.) tall, based and standard height measurement. This includes spires and architectural details but does not include antenna marks. Following data in given as per the available information till 2009. Since, new buildings are always under construction, go online to check new taller buildings.

Name | City | Height | Floors | Year |
---|---|---|---|---|

Planet | Mumbai | 181m | 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 | 50 | 2002 |

Find the height of one story of Ashok Tower.

Below is a list of 10 tallest buildings in India.

Name | City | Height | Floors | Year |
---|---|---|---|---|

Planet | Mumbai | 181m | 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 | 50 | 2002 |

Find the height of one story of the Imperial II.

Below is a list of 10 tallest buildings in India.

Name | City | Height | Floors | Year |
---|---|---|---|---|

Planet | Mumbai | 181m | 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 | 50 | 2002 |

Find the height of one story of The Imperial I.

Below is a list of 10 tallest buildings in India.

Name | City | Height | Floors | Year |
---|---|---|---|---|

Planet | Mumbai | 181m | 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 | 50 | 2002 |

Find the height of The Imperial II .

Below is a list of 10 tallest buildings in India.

Name | City | Height | Floors | Year |
---|---|---|---|---|

Planet | Mumbai | 181m | 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 | 50 | 2002 |

What is the range of data?

Below is a list of 10 tallest buildings in India.

Name | City | Height | Floors | Year |
---|---|---|---|---|

Planet | Mumbai | 181m | 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 | 50 | 2002 |

Find the average height of one storey for the buildings The Imperial I, The Imperial II, Ashok Tower.

Below is a list of 10 tallest buildings in India.

Name | City | Height | Floors | Year |
---|---|---|---|---|

Planet | Mumbai | 181m | 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 | 50 | 2002 |

Find the number of floors of Ashok Tower.

**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 | Sanskrit |
---|---|---|---|---|---|---|

Kunal | 72 | 81 | 92 | 96 | 64 | 85 |

Soni | 86 | 89 | 90 | 82 | 75 | 82 |

**Calculate the total percentage of marks obtained by Soni.**

**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 | Sanskrit |
---|---|---|---|---|---|---|

Kunal | 72 | 81 | 92 | 96 | 64 | 85 |

Soni | 86 | 89 | 90 | 82 | 75 | 82 |

**Compare the percentages of marks obtained by Kunal and Soni.**

**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 | Sanskrit |
---|---|---|---|---|---|---|

Kunal | 72 | 81 | 92 | 96 | 64 | 85 |

Soni | 86 | 89 | 90 | 82 | 75 | 82 |

**Calculate the total percentage of marks obtained by Kunal.**

**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 | Sanskrit |
---|---|---|---|---|---|---|

Sanskrit | 72 | 81 | 92 | 96 | 64 | 85 |

Soni | 86 | 89 | 90 | 82 | 75 | 82 |

**In which subject the difference of marks was maximum ?**

**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 | Sanskrit |
---|---|---|---|---|---|---|

Sanskrit | 72 | 81 | 92 | 96 | 64 | 85 |

Soni | 86 | 89 | 90 | 82 | 75 | 82 |

**How much was the difference in maximum marks?**

**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 | Sanskrit |
---|---|---|---|---|---|---|

Kunal | 72 | 81 | 92 | 96 | 64 | 85 |

Soni | 86 | 89 | 90 | 82 | 75 | 82 |

**Who got more marks in S. Science and what was the difference of marks?**

**The table below gives the data of tourists visiting 5 hill stations over two consecutive years. Study the table and answer questions that follow:**

Hill Station | Nainital | Shimla | Manali | Mussoorie | Kullu |
---|---|---|---|---|---|

2008 | 4000 | 5200 | 3700 | 5800 | 3500 |

2009 | 4800 | 4500 | 4200 | 6200 | 4600 |

**Which hill station was visited by the maximum number of tourists in 2008?**

**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 question:**

Clubs | Music | Dance | Yoga | Dramatics | Fine Arts | Electronics |
---|---|---|---|---|---|---|

Girls | 15 | 24 | 10 | 19 | 27 | 21 |

Boys | 12 | 16 | 8 | 17 | 11 | 30 |

**For which club the difference between boys and girls is the least?
**

**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 question:**

Clubs | Music | Dance | Yoga | Dramatics | Fine Arts | Electronics |
---|---|---|---|---|---|---|

Girls | 15 | 24 | 10 | 19 | 27 | 21 |

Boys | 12 | 16 | 8 | 17 | 11 | 30 |

**Which is the least preferred club by girls?**

**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 question:**

Clubs | Music | Dance | Yoga | Dramatics | Fine Arts | Electronics |
---|---|---|---|---|---|---|

Girls | 15 | 24 | 10 | 19 | 27 | 21 |

Boys | 12 | 16 | 8 | 17 | 11 | 30 |

**Which is the most preferred club by boys?**

Clubs | Music | Dance | Yoga | Dramatics | Fine Arts | Electronics |
---|---|---|---|---|---|---|

Girls | 15 | 24 | 10 | 19 | 27 | 21 |

Boys | 12 | 16 | 8 | 17 | 11 | 30 |

**How many students are there in class VII?**

**The data given below shows the production of motor bikes in a factory for some months of two consecutive years.**

Months | Feb | May | Aug | Oct | Dec |
---|---|---|---|---|---|

2008 | 2700 | 3200 | 6000 | 5000 | 4200 |

2007 | 2800 | 4500 | 4800 | 4800 | 5200 |

**In which month for the year 2007, the production was the least?**

**The data given below shows the production of motor bikes in a factory for some months of two consecutive years.**

Months | Feb | May | Aug | Oct | Dec |
---|---|---|---|---|---|

2008 | 2700 | 3200 | 6000 | 5000 | 4200 |

2007 | 2800 | 4500 | 4800 | 4800 | 5200 |

**Find the mean production for the year 2007.**

**The data given below shows the production of motor bikes in a factory for some months of two consecutive years.**

Months | Feb | May | Aug | Oct | Dec |
---|---|---|---|---|---|

2008 | 2700 | 3200 | 6000 | 5000 | 4200 |

2007 | 2800 | 4500 | 4800 | 4800 | 5200 |

**For which month was the difference between the production for the two years the maximum?**

Months | Feb | May | Aug | Oct | Dec |
---|---|---|---|---|---|

2008 | 2700 | 3200 | 6000 | 5000 | 4200 |

2007 | 2800 | 4500 | 4800 | 4800 | 5200 |

**In which month for the year 2008, the production was the maximum?**

Clubs | Music | Dance | Yoga | Dramatics | Fine Arts | Electronics |
---|---|---|---|---|---|---|

Girls | 15 | 24 | 10 | 19 | 27 | 21 |

Boys | 12 | 16 | 8 | 17 | 11 | 30 |

**For which dub is the difference between boys and girls the maximum?**

**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 |

**In which town was the population growth least?**

**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 |

**In which town was the population growth maximum?**

**The table below gives the data of tourists visiting 5 hill stations over two consecutive years. Study the table and answer questions that follow:**

Hill Station | Nainital | Shimla | Manali | Mussoorie | Kullu |
---|---|---|---|---|---|

2008 | 4000 | 5200 | 3700 | 5800 | 3500 |

2009 | 4800 | 4500 | 4200 | 6200 | 4600 |

**In which hill stations was there increase in number of tourists in 2009?**

**The table below gives the flavours of ice-cream liked by children (boys and girls) of a society.**

Flavors | Vanilla | Chocolates | Strawberry | Mango | Butterscotch |
---|---|---|---|---|---|

Boys | 4 | 9 | 3 | 8 | 13 |

Girls | 8 | 12 | 7 | 9 | 10 |

**Find the ratio of children who liked strawberry flavour to vanilla flavour of ice-cream.**

**The table below gives the flavours of ice-cream liked by children (boys and girls) of a society.**

Flavors | Vanilla | Chocolates | Strawberry | Mango | Butterscotch |
---|---|---|---|---|---|

Boys | 4 | 9 | 3 | 8 | 13 |

Girls | 8 | 12 | 7 | 9 | 10 |

**How many girls are there in all?
**

**The table below gives the flavours of ice-cream liked by children (boys and girls) of a society.**

Flavors | Vanilla | Chocolates | Strawberry | Mango | Butterscotch |
---|---|---|---|---|---|

Boys | 4 | 9 | 3 | 8 | 13 |

Girls | 8 | 12 | 7 | 9 | 10 |

**Which flavour is liked the most by the boys?**

**The table below gives the flavours of ice-cream liked by children (boys and girls) of a society.**

Flavors | Vanilla | Chocolates | Strawberry | Mango | Butterscotch |
---|---|---|---|---|---|

Boys | 4 | 9 | 3 | 8 | 13 |

Girls | 8 | 12 | 7 | 9 | 10 |

**How many children like chocolate flavor of ice cream?**

**A car seller collects the following data of cars sold in his shop:**

Colour of Car | Number of Cars Sold |
---|---|

Red | 15 |

Black | 20 |

White | 17 |

Silver | 12 |

Others | 9 |

**Which colour of the car is most liked?**

**Observe the following data:**

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 |

**Which class has the maximum number of students?**

**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 |

Magazine Readers | 150 | 100 | 200 | 300 | 250 | 200 |

**On which day, the number of readers in the library was maximum?**

**Rohit collected the data regarding weights of students of his class and prepared the following table:**

Weight (in kg) | Number of Students |
---|---|

44 – 47 | 3 |

48 – 51 | 5 |

52 – 55 | 25 |

56 – 60 | 7 |

**A student is to be selected randomly from his class for some competition. The probability of selection of the student is highest whose weight is in the interval ________ .**

A car seller collects the following data of cars sold in his shop:

Colour of Car | Number of Cars Sold |
---|---|

Red | 15 |

Black | 20 |

White | 17 |

Silver | 12 |

Others | 9 |

Which measure of central tendency should be used to find the most liked car)?

**Age (in years) of 6 children of two groups are recorded as below:**

Group A | Group B |
---|---|

7 | 7 |

7 | 9 |

9 | 11 |

8 | 12 |

10 | 12 |

10 | 12 |

**What is the mode of Group A?**

**Age (in years) of 6 children of two groups are recorded as below:**

Group A | Group B |
---|---|

7 | 7 |

7 | 9 |

9 | 11 |

8 | 12 |

10 | 12 |

10 | 12 |

**What is the mode of Group B?**

**Age (in years) of 6 children of two groups are recorded as below:**

Group A | Group B |
---|---|

7 | 7 |

7 | 9 |

9 | 11 |

8 | 12 |

10 | 12 |

10 | 12 |

**What is the range of Group A?**

**Age (in years) of 6 children of two groups are recorded as below:**

Group A | Group B |
---|---|

7 | 7 |

7 | 9 |

9 | 11 |

8 | 12 |

10 | 12 |

10 | 12 |

**What is the range of Group B?**

**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 |

Magazine Readers | 150 | 100 | 200 | 300 | 250 | 200 |

**What is the mean number of magazine readers?**

Months | Feb | May | Aug | Oct | Dec |
---|---|---|---|---|---|

2008 | 2700 | 3200 | 6000 | 5000 | 4200 |

2007 | 2800 | 4500 | 4800 | 4800 | 5200 |

**In which year was the total output the maximum?**

**Rohit collected the data regarding weights of students of his class and prepared the following table:**

Weight (in kg) | 44 – 47 | 48 – 51 | 52 – 55 | 56 – 60 |
---|---|---|---|---|

Number of Students | 3 | 5 | 25 | 7 |

**A student is to be selected randomly from his class for some competition. The probability of selection of the student is the highest whose weight is in the interval.**

Was This helpful?

Lido

Courses

Quick Links

Terms & Policies

Terms & Policies

2022 © Quality Tutorials Pvt Ltd All rights reserved