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evaluation of survey
in our company we conducted a survey among the employees (250 employees) . The participants could answer some questions to different topics (e.g. topic A: "communication", topic B: "Own actvities", topic C: "direct superior" (= direct boss), ... )
The possible answers (nominal) were "not relevant at all" (= 1 point), ..., "applies completely" (= 5 points).
Now, I want to find groups of employees within our company (e.g. -> satisfied employees, ...)
Up-to-now, I tried k-means: I calculated the average points for each employee within each topic and ran the k-means. here I found four groups (the best number of groups).
Are there any other approaches (PCA, ...) to find groups within the results of the survey?
Thanx in advance