Dictionary of Business Terms: histogram
histogram
a bar graph in which the frequency of occurrence for each class of data is represented by the relative height of the bars.
Dictionary of Computer and Internet Terms: histogram
histogram
a bar graph in which the bars represent how many times something occurs (Figure 130). Histograms are often used in photopaint programs and scanner software to allow direct manipulation of the image characteristics. Each bar represents the total number of pixels of a particular shade of gray. By sliding the endpoints closer together, you decrease the image contrast; sliding the endpoints apart increases contrast.
