Scatterplot and Likert Scale

[SFC]

Can we create a scatterplot for likert scale data, with the size of a
dot representing the number of cases? Scatterplot is useful for
variables with many distinct values. However, for likert scales, it is
not unusual to have only five or less distinct values in a data set. A
scatterplot of likert scale data is not very useful.

I can create summary data from a data set with frequency for each
combination, and plot a bubble chart in Excel. However, I would like
to know if there is an existing chart type for the purpose which I
overlooked. :)

Any ideas?

--
Best Regards,
Shu-Fai

[Ryan]

I'd probably use a bar graph. -Ryan

[Ryan]

> I'd probably use a bar graph. -Ryan- Hide quoted text -
>
> - Show quoted text -

Oops! Are you trying to show a relationship between on scores on two
Likert-scale items? If yes, scratch the bar graph suggestion. In this
case, I'd probably just do a scatterplot as you did originally. Others
on SPSS-L will probably have better suggestions. I can't think of any
at the moment. -Ryan

[SFC]

Yes, I am trying to prepare scatterplot for likert scale items. Maybe
using aggregation and plot a bubble chart is the only option in SPSS, :
(

Really wish I can do it in one single command, especially when there
are many likert items to explore ...

--
Shu-Fai

[SFC]

Oh .. I found the solution myself.

Both GPL and IGRAPH have a jitter option.

For GPL, it is "ELEMENT: point.jitter ...".

For IGRAPH, it is "/SCATTER COINCIDENT=JITTER".

A random component will be added to separate the points with the same
values on
both variables. In GPL, the user can even control how the random
component is added.

This partly solves my problem, although I would also like to know to
do this
in the dialog box. I am comfortable to work with syntax, but my
students
may want to know how to enable the jitter option in the dialog box
interface.

--
Shu-Fai