I want to group my cases in SPSS according to how they scored for each of the 21 variables. Can I do a cluster analysis or are my numbers too small?

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Journal article request please ?

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s. Rama Gokula Krishnan

That depends on your sample size. Generally, a sample size of 100-150 is required for cluster analysis.

Source- Article Statistical power for cluster analysis

Ronán Michael Conroy

Assuming you have a reasonable sample size, I'd also consider Orange (https://orangedatamining.com) which is free and intuitive and does lots of clustering methodologies. And has truly excellent YouTube tutorial videos. Like this https://www.youtube.com/watch?v=dJ5z2SRwzgs

Bruce Weaver

How are readers meant to judge whether your sample size is too small when you have not reported the sample size? Am I missing something?