Page 281 - ICSE Math 8

Self-Testing Exercise 6

DATA HANDLING

1. Given below are the heights (in cm) of 20 students of class VIII. Construct a discrete frequency
distribution.
130, 142, 128, 130, 152, 158, 125, 142, 130, 142, 152, 125, 142, 142, 128, 152, 158, 130, 125, 127

2. Construct a grouped frequency distribution for the marks scored by 30 students in Mathematics
examination.

90, 56, 23, 45, 21, 56, 34, 97, 94, 94, 92, 45, 34, 23, 28, 55, 58, 59, 62, 68, 72, 44, 49, 47, 87, 95, 96,
48, 49, 34

3. Given below is the frequency distribution of relative humidity for 205 days. Draw a bar graph to represent
the data.

Relative humidity (in%) 40 45 55 50 35 45
Frequency (in days) 20 25 30 35 45 50

4. Draw a pie graph to represent the following data.

Vehicle Scooter Motorcycle Bus Car Bicycle
Speed (in km/h) 40 60 50 70 20

5. The following table gives the number of children classified to their favourite colour. Draw a bar graph
to represent the given data.

Colour Red Orange Blue Green Yellow
Number of students 10 16 20 12 8

6. Rishi has the following varieties of fish in his aquarium. Draw a pie chart to represent the given data.

Type Gold fish White cloud Starfish Pencil fish Bloodfin tetra
Number of fish 5 4 2 6 3

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