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Write three merits of Bar graph.

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we can show total quantity of production on the Bar graph.

We can also compare different quantities of the same item

it is easy to show quantities on bar graph.

What is a Bar Graph Used For

A bar graph (also known as a bar chart or bar diagram) is a visual tool that uses bars to compare data among categories. A bar graph may run horizontally or vertically. The important thing to know is that the longer the bar, the greater its value.

Bar graphs consist of two axes. On a vertical bar graph, as shown above, the horizontal axis (or x-axis) shows the data categories. In this example, they are years. The vertical axis (or y-axis) is the scale. The colored bars are the data series.

Bar graphs have three key attributes:

  • A bar diagram makes it easy to compare sets of data between different groups at a glance.
  • The graph represents categories on one axis and a discrete value in the other. The goal is to show the relationship between the two axes.
  • Bar charts can also show big changes in data over time.

Bar Graph vs Line Graph

Bar graphs display data in a way that is similar to line graphs. Line graphs are useful for displaying smaller changes in a trend over time. Bar graphs are better for comparing larger changes or differences in data among groups.

When to Use a Bar Graph

Bar graphs are an effective way to compare items between different groups. This bar graph shows a comparison of numbers on a quarterly basis over a four-year period of time. Users of this chart can compare the data by quarter on a year-over-year trend, and also see how the annual sales are distributed throughout each year.

Bar graphs are an extremely effective visual to use in presentations and reports. They are popular because they allow the reader to recognize patterns or trends far more easily than looking at a table of numerical data.

Types of a Bar Graph

When presenting data visually, there are several different styles of bar graphs to consider.

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