Making and reading histograms

In a histogram, the vertical axis is labelled by what?

• X axis

• Origin

• Frequency

• Lower limit

For which of the following would you use a histogram to represent the data.

• weight ranges of competitors in a boxing tournament

• Fruits sold by different vendors

• favourite colours of students in a class

• sports preferred by different students of a class

A histogram groups numbers into what?

• Groups

• Ranges

• Category

• Sectors

How many teachers are 20-25 years of age

• 10

• 8

• 3

• 4

How many students scored more than 30 marks?

• 29

• 27

• 31

• 60

What are the ranges plotted on the x axis called?

• Class-ranges

• Class-intervals

• Levels

• None of the above

How many girls have the maximum height in class VII

• 7

• 9

• 20

• 13

How many people’s salary is between 11,000-21,000

• 400

• 300

• 250

• 50

How many students watch TV for less than 4 hours

• 34

• 46

• 12

• 14

the lower limit in a class-interval cannot be 0

• True

• False