There are times when you are having trouble choosing which among the graphs that you are going to use will be the most effective for you. If you are choosing between the histogram and the bar graph, you should know what you need. The bar graph is normally used in order to show data that needs to be shown in various categories.
The histogram can be used in order to present numerical data properly. One main difference between the two is you might notice that the histogram is usually drawn without any spaces in between the given bars while the bar graph will have some spaces in between.
A bar graph is one of the main graphical representation techniques in statistics. It is used to display well-defined values of the qualitative information on a horizontal axis and the relative frequencies of those values which are displayed on a vertical axis.
A bar with its height/length proportional to the relative frequency represents each distinct value. The bars are arranged in such a way that they don’t touch each other. A bar graph is one of the most useful tools for representing categorical data.
The histogram is another essential graphical representation of information, and it can be considered as an advancement from the bar graph. It is a graphic presentation of information. A histogram makes it easier to evaluate different data, the frequency of its categories, and occurrences. In a histogram, the classes of quantitative data are displayed on the y-axis.