Histograms VS. Bar Charts
Definition of Histograms and Bar Charts
Bar charts and histograms can both be used to compare the sizes of different groups. A Bar chart is made up of bars plotted on a graph.
Histogram is a chart representing a frequency distribution; heights of the bars represent observed frequencies. In other words a histogram is a graphical display of data using bars of different heights. Usually, there is no space between adjacent Bars.
From the definition we can see their common point: The height of the column indicates the size of the group defined by the column label.
Difference between Histograms and Bar Charts
- The columns are positioned over a label that represents a categorical variable.
- The height of the column indicates the size of the group defined by the categories.
- The columns are positioned over a label that represents a quantitative variable.
- The column label can be a single value or a range of values.
Here is the main difference between them. With bar charts, each column represents a group defined by a categorical variable; and with histograms, each column represents a group defined by a quantitative variable.
One indication of this distinction: it is always appropriate to talk about the skewness of a histogram; that is, the tendency of the observations to fall more on the low end or the high end of the X axis.
Differently, bar charts' X axis does not have a low end or a high end; because the labels on the X axis are categorical - not quantitative. Therefore, it is less appropriate to comment on the skewness of a bar chart. Refer to the following diagram to see a visual comparison between them.
Why Use Histograms and Bar Charts
Like many other visuals, histograms and bar charts are gaining increasing popularity for the following benefits.
- Ease data analysis.
- Simplify complicated statistics and ideas.
- Add interest and fun to presentation (reports, essays and so on).
- Make presentation more compelling and comprehensible.
- Enhance effective information communication.
Histograms and Bar Charts Maker
Ever think about making a sleek-looking chart or graph in less than 5 minutes? You can realize it right now, with Edraw - an advanced automatic diagram maker which can generate many kinds of diagrams including histograms and bar charts. The drawing step has been cut, leaving only simple steps for users to do. Since seeing is believing, you can now try it for free.
Histograms and Bar Charts Examples
Histogram Example - Candy Assumption
This histogram is about candy assumption. You can edit it easily by using the floating action button and simply changing the data value.
Column Chart Example - Sales Growth
Bar Chart Example - Sales Report
Edraw diagram tool can greatly increase and improve process of making PFDs. With abundant shapes and examples, even novice users can handle it easily because it requires no drawing skill and experience. Most importantly, it save time, effort and money for users by automating many operations in drawing.