It can be defined as a set of rectangles with bases along with the intervals between class boundaries and with areas proportional to frequencies in the corresponding classes. The height of each bar shows how many fall into each range. A graphical display of data using bars of different heights.
A histogram is a chart that shows frequencies for intervals of values of a metric variable.
Such intervals as known as bins and they all have the same widths. These ranges of values are called classes or bins. A statistical graph that represents the frequency of values of a quantity by vertical rectangles of varying heights and widths. The horizontal axis displays the number range and the vertical axis frequency represents the amount of data that is present in each range.