Claim Q2

M1. The Predictive Modeling Pipeline M1. Quiz M1.03
#1

In my 1st answer, I selected a), b) and c)
If I agree with the assertion “The number of possible values of a categorical variable is not related to whether the variable is nominal (unordered) or ordinal (with ordered values).”

On the other hand, this should not rule out (a) because an ordinal variable can have a large number of possible categories.

To be accurate, proposition a) would have had to be “a) categorical variables strictly with a large number of possible categories.”

Can you award me the point?

#2

Don’t worry too much about points. The threshold for obtaining the certificate is 60%, so I am sure one answer should not make a big difference.

Unfortunately, I cannot provide a in-depth answer without spoiling the question for other students, but let me emphasize that we are asking for the definition of an ordinal variable, which does not require any particular size of the categories. In other words, it is not a matter of possibilities, but a matter of necessary conditions for the definition to apply.

#3

Thank you for your response.
I maintain that the question title is minimalist: “Ordinal variables are:” and therefore confusing.
Perhaps clarify that only the answers needed for the definition are required.

#4

I agree the question is minimalist. We will reconsider the wording for session 03 of this MOOC. Thanks for your feedback :slight_smile:

#5

J’ai mis le tag associé du coup :wink: