why the value of outlook in correlation matrix is “？”

AP

just run this

 you will get this

why the value of outlook in correlation matrix is “？”

RolandJones

Hi @AP,

This is because the value can only be calculated when the attributes are numerical or binominal. Outlook is Nominal, and hence a correlation can't be calculated.

Thanks,

Roland

AP

“the value can only be calculated when the attributes are numerical or binominal. Outlook is Nominal, and hence a correlation can't be calculated.”—-why？

RolandJones

The statistical method of calculating correlations doesn't support categories, referred to as nominal in AI Studio.

Hope this helps,

Thanks,

Roland

AP

“The statistical method of calculating correlations doesn't support categories”，but “binominal” is a kind of categories