I am interested in fitting loess lines to a scatterplot in SPSS. I am able to get a fit line for the mean of my Y variable, but I would also like fit lines 1 SD above and below the mean of Y (see attached for an example). Is this possible in SPSS?
Hi Melissa ! You may simply follow the R code given below and get your desired plot. For this you only have to install new ver of R and ggplot2 package only.
x= runif(100)
y=runif(100)
#The X, Y value you may import from .csv file (YOUR DATA)
fit1
You can try option in SPSS chart builder 'panel by columns/rows' on X or Y axis variables.
Better use MS Excel to get it done, its easy and Little more difficult in SPSS but can do
Hi Melissa ! You may simply follow the R code given below and get your desired plot. For this you only have to install new ver of R and ggplot2 package only.
x= runif(100)
y=runif(100)
#The X, Y value you may import from .csv file (YOUR DATA)
fit1
Hi Melissa,
In SPSS, once you've created the scatterplot, double-click on it. That the Chart Editor window. From the menu bar, select: Options/Reference Line from equation (there is also an icon that does the same). Once selected, a new window shows that allows you to specify any linear "reference line" via the "Custom Equation" box. Three times through, once for each line will do the job.
Good luck with your work!
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