Hi every body,
Can you please help me with this confusing issue?
My data is preseted in a scatter plot and the trendline is shown in the figure. The R square value from the trendline option is not the same as the one I got from the Data analysis option from the tools menu (This is an Add-in option). To be sepecific the trend line gave an R square= 0.5465 where the data analysis gave an R square=0.9804509.
Thanks in advance for your help.....
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