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Exercises in Chapter 24 data handling construction of bar graphs Grade 7

Questions in Data Handling-Construction Of Bar Graphs Exercise 24.1

Following data gives total marks (out of 600) obtained by six children of a particular class.

Student | Ajay | Bali | Dipti | Faiyaz | Gotika | Hari |
---|---|---|---|---|---|---|

Marks Obtained | 450 | 500 | 300 | 360 | 400 | 540 |

Represent the data by a bar graph

Number of children in six different classes are given below. Represent the data on a bar graph.

Class: | V | VI | VII | VIII | IX | X |
---|---|---|---|---|---|---|

Number of Children: | 135 | 120 | 95 | 100 | 90 | 80 |

(i) How do you choose the scale?

(ii) Which class has the maximum number of children?

(iii) Which class has the minimum number of children?

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

Subjects | English | Hindi | Maths | Science | S.Science |
---|---|---|---|---|---|

1st Term | 67 | 72 | 88 | 81 | 73 |

2nd Term | 70 | 65 | 95 | 85 | 75 |

(i) In which subject, has the children improved their performance the most?

(ii) Has the performance gone down in any subject?

Consider the following data gathered from a survey of a colony:

Favourite sport | Cricket | Basket - Ball | Swimming | Hockey | Athletics |
---|---|---|---|---|---|

Watching | 1240 | 470 | 510 | 423 | 250 |

Participating | 620 | 320 | 320 | 350 | 105 |

Draw a double bar graph choosing an appropriate scale. What do you infer from the bar graph?

(i) Which sport is the most popular?

(ii) What is more preferred watching or participating in sports?

The production of saleable steel in some of the steel plants of our country during 1999 is given below:

Plant | Bhilai | Durgapur | Rourkela | Bokaro |
---|---|---|---|---|

Production (In thousand tonnes) | 160 | 80 | 200 | 150 |

Construct a bar graph to represent the above data on a graph paper by using the scale.

1 big division = 20 thousand tonnes.

The following data gives the number (in thousands) of applicants registered with an Employment Exchange during, 1995-2000:

Year | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 |
---|---|---|---|---|---|---|

Number of Applicants Registered(in Thousands) | 18 | 20 | 24 | 28 | 30 | 34 |

Construct a Bar Graph to represent the above data.

The following table gives the route length(in thousand kilometres) of the Indian Railways in some of the years:

Year | 1960-61 | 1970-71 | 1980-81 | 1990-91 | 2000-01 |
---|---|---|---|---|---|

Route length (in thousand kilometres) | 56 | 60 | 61 | 74 | 98 |

Represent the above data with the help of a bar graph.

The following data gives the amount of loans (in crores of rupees) disbursed by a bank during some years:

Year | 1992 | 1993 | 1994 | 1995 | 1996 |
---|---|---|---|---|---|

Loan (in crores of rupees) | 28 | 33 | 55 | 55 | 80 |

(i) Represent the above data with the help of a bar graph.

(ii) With the help of the bar graph, indicate the year in which amount of loan is not increased over that of the preceding year.

The following table shows the interest paid by a company (in lakhs):

Year | 1995-96 | 1996-97 | 1997-98 | 1998-99 | 1999-00 |
---|---|---|---|---|---|

Interest (in lakhs of rupees) | 20 | 25 | 15 | 18 | 30 |

Draw the bar graph to represent the above information.

The following data shows the average age of men in various countries in a certain year:

Country | India | Nepal | China | Pakistan | UK | USA |
---|---|---|---|---|---|---|

Average age (in years) | 55 | 52 | 60 | 50 | 70 | 75 |

Represent the above information by a bar graph.

The following data gives the production of food grains (in thousand tonnes) fo some years:

Year | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 |
---|---|---|---|---|---|---|

Production( in thousand tonnes) | 120 | 150 | 140 | 180 | 170 | 190 |

Represent the above data with the help of a bar graph.

The following data gives the amount of manure (in thousand tonnes) manufactured by a company during some years:

Year | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 |
---|---|---|---|---|---|---|

Manure (in thousand tonnes) | 15 | 35 | 45 | 30 | 40 | 20 |

(i) Represent the above data with the help of a bar graph.

(ii) Indicate with the help of the bar graph the year in which the amount of manure manufactured by the company was maximum.

(iii) Choose the correct alternative:

The consecutive years during which there was a maximum decrease in manure production are:

(a) 1994 and 1995 (b) 1992 and 1993

(c) 1996 and 1997 (d) 1995 and 1996

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