# How would I classify this variable?

I am learning about the difference between categorical, ordinal and numerical variables.

From what I understand:

• Categorical variables have 2+ categories without any intrinsic order.
• Ordinal variables have clear ordering but the intervals are not necessarily equally spaced.
• Numerical variables are ordered with equally-spaced intervals.

I am stuck on trying to classify these two situations:

1. What level of commitment are you prepared for?

• Multiple times per week
• Once per week
• A couple times per month
• No more than once per month
• Level of commitment is not a factor.

2. What level of commitment are you prepared for?

• 9-11 times per month
• 6-8 times per month
• 3-5 times per month
• 0-2 times per month
• Level of commitment is not a factor.

My guess would be #1 is ordinal and #2 is numerical. However, the "Level of commitment is not a factor" is throwing me off. Can anyone help clarify this for me?

• Modeling that as a missing value might work well for algorithms that treat it separately like most decision tree impls. You could model as yes/no commitment is a factor and if so, the value as well as a separate feature. – Sean Owen Aug 25 '20 at 21:29