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Use this tag for any *on-topic* question that (a) involves `R` either as a critical part of the question or expected answer, & (b) is not *just* about how to use `R`.

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Can I use spearman rho correlation test on these two variables?

Your error is because you have not encoded the categorical variable into a discrete metric IE it is either "S", "M", "T", ... or is not meaning the number of variables you need equals the number if cl …
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2 votes

Is it mandatory to subset your data to validate a model?

The short answer is yes, you need to assess your model's performance on data not used in training. Modern model building techniques are extremely good at fitting data arbitrarily well and can easily …
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1 vote
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R: What is the distance function equivalent for this formula?

By default cor will compute the Pearson correlation coefficient. Subtracted from $1$ this is know as the Pearson Distance.
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