topic Re: How to do boxplot if both x and y are quantitative bariable? in Discussions

How to do boxplot if both x and y are quantitative variable?

Anonymous — Mon, 17 Nov 2014 18:53:57 GMT

I am new in JMP, and it may be a simple question. I would like to do a boxplot (instead of a scatter plot) with id(y) vs Length(x) (both are quantitative variable). Somehow I can only choose boxplot when X(length) is categorical variable, I can't find example in help when x is quantitative variable.

Thanks in advance for help.

Kelvin

Re: How to do boxplot if both x and y are quantitative bariable?

pmroz — Mon, 17 Nov 2014 21:48:56 GMT

It's possible to do this in Graph Builder, in JMP 10 and JMP 11. What version of JMP are you using?

I created a simple table with an X and Y column, where both were quantitative (=continuous) variables. I was able to click on the boxplot icon to create a boxplot no problem.

Try copying and pasting the following code into a script window, and then hit CTRL-R to run it.

New Table( "Demo Box Plot",

Add Rows( 13 ),

New Script(

"Graph Builder",

Graph Builder(

Show Control Panel( 0 ),

Variables( X( :x ), Y( :Column 2 ) ),

Elements(

Box Plot(

X, Y, Legend( 3 ), Jitter( 1 ),

Outliers( 1 ), Box Style( "Outlier" )

)

New Column( "x", Numeric, Continuous,

Format( "Best", 12 ),

Set Values( [1, 1, 1, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4] )

New Column( "Column 2", Numeric,

Continuous, Format( "Best", 12 ),

Set Values( [20.1, 20.3, 18, 15, 17, 34, 65, 45, 34, 54, 34, 12, 24] )

)

);

Re: How to do boxplot if both x and y are quantitative bariable?

Anonymous — Tue, 18 Nov 2014 02:10:07 GMT

Yes, It works. Thank you.

Re: How to do boxplot if both x and y are quantitative bariable?

Steven_Moore — Wed, 19 Nov 2014 12:45:21 GMT

Another way to do this: Suppose your X values are no integers. You can set up a nominal/categorical X variable by defining ranges of the X variable. For example, let x = 0 - 5 be A, x = 5.1 - 10 = B, x = 10.1 -15 =15, etc. Then you can do boxplots very nicely.