Having trouble with Scatter / Bubble Charting?
To create a graph like the one below, you need to set the X-axis values in the Chart Editor to 'Use Column Header Values' for the chart to generate correctly.
See also Choosing the Correct type of Chart
1. Report Example for Scatter/Bubble
2. Chart Information example
Always select the Â 'Use Column Header Values' option via the drop-down for Â 'X-axis values' field