We measure all day and divide into categories, e.g. when we #bake, when we look at the #thermometer or when we say whether we like one shoe better than another.
In doing so, we intuitively use #scales that determine whether and how we may calculate with #variables.

In the #socialsciences, we distinguish between four #scale levels:
- nominal scale
- ordinal scale
- interval scale
- ratio scale
Nominal and ordinal are also summarized as #categorical and interval and ratio as #metric 🚀

Is anyone aware of a scheme to transform profession and education as measured in the European Social Survey into ordinal variables to be included in SEM models? Or just articles including education and profession in SEM models? #Categorical #Ordinal #SEM #Psychology #Methods

The myth of categorical perception [CP]

https://asa.scitation.org/doi/10.1121/10.0016614

"50 years of work using discrimination tasks, priming, the visual world paradigm, and event related potentials has rejected the strongest forms of CP and provided little strong evidence for any form of it"

"This paper reviews the origins and impact of this scientific meme and the work challenging it"

#categorical-perception #speech

Can anyone point me towards a source of #downloadable #openaccess #datasets including #continuous and #categorical #variables with various distributions that can be used to demonstrate basic #statistics procedures to #medicalstudents?