Demonstrating histogram

Graphs
     Chart Builder
          Gallery: Histogram
               Drag the first histogram to the Chart preview.
               Drag XXX from the Variable list to the "X-axis" box.
          Element Properties
               Check Display Normal Curve
          OK

Demonstrating Box Plot Diagram

Analyze
     Descriptive Statistics
          Explore
               Display: Both
               Dependent List: XXX
               OK

Showing median

Analyze
     Descriptive Statistics
          Explore
               Dependent List: XXX
                    OK

Showing mean

Analyze
     Descriptive Statistics
          Descriptives
               Variable: XXX
                    OK

Bimodal distribution

It is also symmetric, but the highest frequencies are at both ends, with few cases in the middle. Daytime traffic accidents fit this pattern, with most accidents occurring in the early mornings and late afternoons during the commute to and from work.

Chart Editor

To access the Chart Editor, double click on the histogram in the Output window. This opens the SPSS Chart Editor window. You will observe new options next to the graph, which allow you to change titles, axis labels, axis scales, etc.

Histograms

A histogram is a graphic summary of the distribution of a scale variable. In a histogram, classes of values are listed along the horizontal axis. The height of the bar above each class indicates the number of cases with values in that class.