Histogram is a graph that is very similar to a bar chart except that bar charts are drawn for qualitative data but histograms are drawn for continuous data. Histograms will help us to identify the center, shape and symmetry of the data. A histogram can tell us about the peaks and extreme values, whether the distribution of data is skewed to the left, skewed to the right, bell-shaped, uniform or bimodal. A histogram can also be used to check out the normality.