I have created a scatter graph in Prism under -> multivariable analyses -> extract and re-arrange, to display relationship between 2 variables, the 3 subgroups within the group are represented with different symbols.
I wish to display the regression line for the group as a whole - is this possible?
Claire O'Sullivan
You have to create an XY data table in Prism. Run linear regression for this data table.
Data columns: X variable; Y variable listed as a whole group, and duplicate Y variable for each subgroup in separate columns, ensuring to line up with correct X value.
Then double click on graph to edit, display subgroups as data points (no regression line), remove single data point display for the whole group, display regression line for whole group only.
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