By default, the Start from Zero property is set to true. Arguments are shown from the start to the end, regardless of the location of the chart. The picture below shows an example of a chart with the Start from Zero property set to true for the X and Y axes:

 

 

If the Start from Zero property to set false, then the Range of the chart area will be shown. The picture below shows an example of a chart with the Start from Zero property set to false for the X axis: