Truncated Y-Axis One of the easiest ways to misrepresent your data is by messing with the y-axis of a bar graph, line graph, or scatter plot. In most cases, the y-axis ranges from 0 to a maximum ...

How to Add Data in the Y Axis in Microsoft Excel. Excel has two primary types of charts that graph data sets onto an axis: line charts and scatter charts. Depending on your settings, the two types ...

The graph of y = x 2 6 x + 9 touches the x -axis at x = 3. The coefficient of x 2 is positive, so the graph will be a positive U-shaped curve.

For example, you could show line graphs for temperature and humidity on top of each other. For this purpose, Excel lets you add a series of data to a chart and plot it on a second y-axis.

In this graph the intervals on the bottom axis are unequal, making it difficult to read. Scales should either start at zero, or be concertinaed (squashed) as shown in the y-axis in the above graph.