6.
Histogram
Histogram is a special bar chart for measurement dat. Histograms is used to chart frequency of occurrences Goetsch [3]. In the histogram, the data is grouped into adjacent numerical categories. Minitab can organize the data into groups, and plot the histogram. The difference between bar chart and histogram is that the X-axis on a bar chart is a listing of categories; where as the x-axis on a histogram is a measurement scale. In addition, there are no gaps between adjacent bars.
Data concerning the tensile strength test is shown in Table 2 and used to illustrate the histogram in Figure 3.