The conversation between human and AI assistant.
[|Human|] Based on the following description of a data set, decide which elements from this set are categorical and which are numerical.
[|AI|] In this data set, the 'student name' and 'grade' elements are categorical; whereas, the 'heights in cm' element is numerical.
[|Human|] 
Based on the following description of a data set, decide which elements from this set are categorical and which are numerical.