# Data Handling

#### Ex 3.3

**Question 6:** Take the data giving the minimum and the maximum temperature of various cities given in the beginning of this Chapter. Plot a double bar graph using the data and answer the following:

Temperature of Cities (as on 20/06/2006 | ||
---|---|---|

City | Max | Min |

Ahmadabad | 38°C | 29°C |

Amritsar | 37°C | 26°C |

Bangalore | 28°C | 21°C |

Chennai | 36°C | 27° |

Delhi | 38°C | 28°C |

Jaipur | 39°C | 29°C |

Jammu | 41°C | 26°C |

Mumbai | 32°C | 27°C |

**Answer:**

(a) Which city has the largest difference in the minimum and maximum temperature on the given date?

**Answer:** Jammu

(b) Which is the hottest city and which is the coldest city?

**Answer:** Jammu is the hottest city and Bangalore is the coldest city.

(c) Name two cities where maximum temperature of one was less than the minimum temperature of the other.

**Answer:** Maximum temperature of Bangalore is less than the minimum temperature of Ahmadabad and Jaipur.

(d) Name the city which has the least difference between its minimum and the maximum temperature.

**Answer:** Mumbai

## Exercise 3.4

**Question 1:** Tell whether the following is certain to happen, impossible, can happen but not certain.

(a) You are older today than yesterday.

**Answer:** Certain to happen

(b) A tossed coin will land heads up.

**Answer:** Can happen but not certain.

(c) A die when tossed shall land with 8 on top.

**Answer:** Impossible

(d) The next traffic light seen will be green.

**Answer:** Can happen but not certain.

(e) Tomorrow will be a cloudy day.

**Answer:** Can happen but not certain.

**Question 2:** There are 6 marbles in a box with numbers from 1 to 6 marked on each of them.

(a) What is the probability of drawing a marble with number 2?

**Answer:** Number of marbles with 2 written on it = 1

Total number of marbles = 6

Probability of drawing a marble with number 2 `= 1/6`

(b) What is the probability of drawing a marble with number 5?

**Answer:** Number of marbles with 5 written on it = 1

Total number of marbles = 6

Probability of drawing a marble with number 5 `= 1/6`

**Question 3:** A coin is flipped to decide which team starts the game. What is the probability that your team will start?

**Answer:** Number of head or tail in a toss of coin = 1

Total number of events = 2 (one for head and one for tail)

Probability of getting either a head or a tail `= 1/2`