Change them how? Change formatting? Select each marker (two single clicks, one for
the series, one for the marker) to format the marker and line preceding the marker.
Change the data? Either change the data in the cells, or you have to change which
cells each series refers to (Chart menu - Source Data - Series tab).

- Jon
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Jon Peltier, Microsoft Excel MVP
Peltier Technical Services
Tutorials and Custom Solutions
http://PeltierTech.com/
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ct wrote:

In MicrosoftExcell Chart
How do I change all the lines and markers in a graph to be the same without
changing each individual data series.