Question

In a bar graph, height of each rectangular bar represents -

• A. number of categories in the given data set
• B. frequency of respective category in the given data set
• C. (a) and (b) above.
• D. None of the above.

Answer 1

The correct option is B frequency of respective category in the given data set

Bar graphs are represented using rectangular bars.

Each rectangular bar corresponds to a category of the data set, whose height represents the frequency of the respective category in the given data set.

Example: The bar graph representation of a group of boys having different ages is as follow:

Here, the category is the age of boys in years.
The yellow rectangular bar represents the group of boys of 5 years.

The height of the rectangular bar is 50 units.
Hence, the number of 5 years boys is $50.$