Maths 3 Mark Question

A bar graph is a graph with its length proportional to the value it represents. The bars in a bar graph can be plotted vertically or horizontally. A bar graph is a visual display used to compare the amount or frequency of occurrence of different characteristics of data.
Bar graph allows us to:

• Compare groups of data.
• Make generalizations about the data quickly.

1. The bar graph informs us about the industrial production of cement in India in different financial years.
2. 186 lakh tones of cement were produced in the year 1980-81

Explanation:

The height of the bar against the year 1980-81 is up to186 units, and production of cement is shown in lakh tones.

3. Minimum height of a bar is 30 units against the year 1950-51

Therefore, Minimum production of cement is 30 lakh tonnes in the year 1950-51

The maximum height of a bar is 232 units against the year 1982-83

Maximum production of cement is 232 lakh tonnes in the year 1982-83