How to combine different data in one chart
1. Combine a Bubble chart with an Area chart
See Bubble and Area chart for more details.
2. Show several axes and chart types in one chart
See Using two axes in the one chart for more details.
3. Combine two different data series with common horizontal and different vertical values
See Combining several charts into one chart for more details.
See also this tip in French: Comment combiner les données différentes dans un graphique.