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3. Study the given histogram and answer the questions given below.

( a) What information is depicted in the
histogram?
( b) What is the number of teachers in the
youngest age group in the school?
( c) In which age group is the number of
teachers least?

( d) In which age group is the number of
teachers maximum?

( e) What is the class size of each class
interval?
( f) What are the class marks of the first
three class intervals?

( g) How many teachers are below 40 years of age?
4. Study the given histogram and answer the
following questions.
( a) How many students got 50 or more but less
than 60 marks?
( b) In which group does the maximum number
of students fall?

( c) How many students scored 40 or more than
40 marks?
5. Construct a frequency distribution table for
the data on weights (in kg) of 20 students with
class intervals 30-35, 35-40, and so on.
40, 38, 33, 48, 60, 53, 31, 46, 34, 36, 49, 41, 55,
49, 65, 42, 44, 47, 38, 39.

Also, draw a histogram to represent the
grouped distribution you constructed.
6. Draw a histogram to represent each of the
following distributions.

( a) Class Frequency (b) Speed Number of (c) Weekly Number of
interval (in km/h) cars income (in `) workers

0-100 30 40-50 7 6000-6500 8
100-200 40 50-60 12 6500-7000 10

200-300 60 60-70 15 7000-7500 17
300-400 40 70-80 18 7500-8000 14

400-500 10 80-90 6 8000-8500 12
500-600 20 90-100 2 8500-9000 9

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