Bar chart uses of colored bar's length in horizontal direction to visualize data. It's usually used for comparing one dimensional data. Generally speaking, bars in bar chart are aligned to the left and sorted descendingly from top to bottom; it can also align to bottom and sorted from left to right, in this case it is called Column Chart.
Best used with small dataset to precisely compare data along the axis, yet comparing to line chart there is no connection between bars so data can be sorted to give readers better information about the ranks.
Bars implicate the absolute size of data, so it is sometimes misleading when zooming into details which make the axis not starting from zero.
Best chart to precisely and accurately compare between values. Also suitable for finding extreme values and rankings of values.
Work poorly with large dataset or periodic dataset. Become useless when data variation is small comparing to the value itself.
N/A