3 Marks Question

Question 13 Marks

The following table shows the life expectancy (average age to which people live) in various countries in a particular year. Representing the data by a bar graph.

Country	Japan	India	Britain	Ethiopia	Cambodia	UK
Life expectancy	84	68	80	68	62	73

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Question 23 Marks

Given below are the seats won by different political parties in the polling oucome of a state assembly elections:

Political party	A	B	C	D	E	F
Seats won	65	52	34	28	10	31

Draw a bar graph to represent the polling results.

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Question 33 Marks

Various modes of tansport used by 1850 students of a school are given below:

School bus	Private	Bicycle	Rickshaw	By foot
640	360	490	210	150

Draw a bar graph to represent the above data.

Answer

Take the mode of transpot along the x-axis and the number of students along the y-axis.
Along the y-axis, take 1 big division = 100 units.
All the bars should be of same width and same space should be left between the consecutive bars.
Now we shall draw the bar chart, as shown below:

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Question 43 Marks

On a certain day, the temperature in a city was recorded as under.

Time	5 a.m.	8 a.m.	11 a.m.	3 p.m.	6 p.m.
Temperature (in °C)	20	24	26	22	18

Illustrate the data by a bar graph.

Answer

Take the timings along the x- axis and the temperatures along the y-axis.

Along the y-axis, take 1 small square = 5 units.

All the bars should be of same width ans same space should be left between the consecutive bars.

Now we shall draw the bar chart, as shown below:

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Question 53 Marks

The following table shows the number of scooters sold by a dealer during six consecutive years. Draw a bar graph to represent this data.

Year	2011	2012	2013	2014	2015	2016
Number of scooters sold (in thousands)	16	20	32	36	40	48

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Question 63 Marks

The following table shows the number of students participating in various games in school.

Game	Cricket	Football	Basketball	Tennis
Number of students	27	36	18	12

Draw a bar graph to represent the above data.

Answer

Take the various types of games along the x-axis and the number of students along the y-axis.

Along the y-axis, take 1 small square = 3 units.

All the bars should be of same width and same space should be left between the consecutive bars.

Now we shall draw the bar chart, as shown below:

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Question 73 Marks

The following table gives the lifetimes of 400 neon lamps:

Lifetime (in hr)	300-400	400-500	500-600	600-700	700-800	800-900	900-1000
Number of lamps	14	56	60	86	74	62	48

Represent the given information with the help of a histogram.
How many lamps have a lifetime of more than 700 hours?

Answer

Histogram is as follows:

Number of lamps having lifetime more than 700 hours = 74 + 62 + 48 = 184

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Question 83 Marks

The approximate velocities of some vehicles are given below:

Name of vehicle	Bicycle	Scooter	Car	Bus	Train
Velocity (in km/hr)	27	45	90	72	63

Draw a bar graph to represent the above data.

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Maths 3 Marks Question

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