A reader need go no further than page two of Leland Wilkinson’s The Grammar of Graphics before reading, “We will also come to realize why a histogram is not a bar chart and why many other graphics ...

A histogram is a graph of data. It compares the distribution or frenquency of different values or ranges of values. In order to draw a histogram, a frequency table is needed.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Suzanne is a content marketer, writer, and ...

How histograms can help you control key factors that affect exposure levels. Correct exposures are the first step towards usable image files and the histogram displays provided in most digital cameras ...