This is a very broad question but here are some high level guidelines. A scatterplot is generally used to show relationship between two numerical attributes which are graphed on the x and y axes. Often the label (target output) is on the y axis and different attributes (input variables) are shown on the x axis. Parallel plots are generally for showing the values of a given numerical attribute on the y axis across a nominal/categorical attribute on the x axis. You can find more information about basic information like this in the RapidMiner Academy, I suggest taking a look at some of the introductory lessons.
Brian T. Lindon Ventures Data Science Consulting from Certified RapidMiner Experts
Answers
A scatterplot is generally used to show relationship between two numerical attributes which are graphed on the x and y axes. Often the label (target output) is on the y axis and different attributes (input variables) are shown on the x axis.
Parallel plots are generally for showing the values of a given numerical attribute on the y axis across a nominal/categorical attribute on the x axis.
You can find more information about basic information like this in the RapidMiner Academy, I suggest taking a look at some of the introductory lessons.
Lindon Ventures
Data Science Consulting from Certified RapidMiner Experts