Histogram showing the number of data frequency as a bar graph is used to visually express characteristics of data. Although histogram is similar to probability distribution in the light of shape, the y-axis of histogram shows more accurate frequency. Select data you want to apply this method in Analysis Window and click the icon of Histogram in Analysis Tool Bar. This will display a graph showing analysis results as below. Analysis results are shown as a bar graph in histogram, which is registered at Analysis Window. The x-axis of histogram represents data range, while the y-axis shows frequency.