Bar Graph

**Category : **5th Class

When the numerical information is represented on the graph using bars, it is known as bar graph. Let us understand it with the help of an example: In the following table number of cars sold by a company in different months of a year has been shown:

Month |
Number of cars |

January | 30 |

February | 60 |

March | 50 |

April | 10 |

May | 50 |

June | 60 |

July | 70 |

August | 100 |

September | 20 |

October | 40 |

November | 60 |

December | 80 |

**Let us make a bar graph using above information: **

**Step 1:** Draw one horizontal and one vertical line.

** Step 2:** Choose a convenient scale and mark the numbers on the vertical line at equal interval.

**Step 3:** Now make bars, keeping width of the bars and distance among them uniform. Length of the bars is equal to the respective numbers

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

(i) Name the student who got the highest mark

(ii) Find the marks obtained by Amelia

(iii) What scale has been chosen in the bar graph

**Solution:**

(i) Katherine got the highest mark

(ii) Amelia obtained 70 marks

(iii) 1 cm = 10 marks

- A bar graph may be either vertical or horizontal
- The bar which has highest length represents the greatest amount and the bar which has lest amount.

- The information which is in the mumeral form called data.
- The initial data that the observer collects himself is called raw data.
- When raw data is arranged in table in order to extract the information contained by it easily, is called grouped data.
- In the pictograph, data is represented with the help of pictures.
- When the numerical information is represented on the graph using bars, it is known as bar graph.

In the following pictograph, number of video games sold by a shop has been shown

Monday | |

Tuesday | |

Wednesday | |

Thursday | |

Friday | |

Saturday | |

One represents 7 video games |

(The following questions are based on the above pictograph)

**Which one of the following days 49 video games were sold?**

(a) Monday

(b) Saturday

(c) Thursday

(d) Wednesday

(e) None of these

** Answer: (b)**

**Explanation**

In the pictograph 1 represents 7 video games And \[7\times 7=49\]

Thus it is Saturday when 49 video games were sold.

**How many more video games were sold on Thursday than that of Friday?**

(a) 7

(b) 14

(c) 21

(d) 28

(e) None of these

**Answer: (c)**

** Which one of the following day's minimum number of video games was sold?**

(a) Wednesday

(b) Monday

(c) Saturday

(d) Thursday

(e) None of these

**Answer: (a)**

**How many video games were sold on Monday?**

(a) 7

(b) 14

(c) 21

(d) 28

(e) None of these

**Answer: (d)**

**How many video games were sold during first four days of the week?**

(a) 120

(b) 140

(c) 160

(d)180

(e) None of these

**Answer: (b)**

**How many video games was sold on Friday?**

(a) 7

(b) 28

(c) 42

(d) 35

(e) None of these

**Answer: (d)**

**In the following bar graph temperature on different days of a week has been shown. **

**Read the above graph and answer the following questions: Which one of the following days had highest temperature?**

(a) Monday

(b) Tuesday

(c) Wednesday

(d) Thursday

(e) None of these

**Answer: (d)**

**By how much temperature reduced on Friday in comparison of Thursday?**

(a)\[{{3}^{o}}C\]

(b) \[{{6}^{o}}C\]

(c) \[{{9}^{o}}C\]

(d) \[{{12}^{o}}C\]

(e) None of these

**Answer: (b)**

**Which one of the following scale has been chosen in the bar graph?**

(a)\[1cm\text{ }={{3}^{o}}C\]

(b) \[1cm\text{ }={{6}^{o}}C\]

(c)\[1cm\text{ }={{9}^{o}}C\]

(d) \[1cm\text{ }={{12}^{o}}C\]

(e) None of these

**Answer: (a)**

**If the temperature on Monday was \[{{15}^{o}}C\] by what cm length of the bar of Monday would had been increased?**

(a) 1cm

(b) 2cm

(c) 3cm

(d) 4cm

(e) None of these

**Answer: (b)**

**Which one of the following days was the coldest day of the week?**

(a) Sunday

(b) Monday

(c) Thursday

(d) Tuesday

(e) None of these

**Answer: (a)**

*play_arrow*Data Handing*play_arrow*Introduction*play_arrow*Data*play_arrow*Pictograph*play_arrow*Bar Graph*play_arrow*Data Handling

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