(Solved): 21 [ 5 pts] Distinguish type of data variables. The table below contains a small part of a data set ...

21 [ 5 pts] Distinguish type of data variables. The table below contains a small part of a data set that describes the fuel economy in miles per gallon (mpg) of nodel year 2019 motor vehicles. Note that in this table, Make and Model is also a variable, but it is a special type of variable known as a label variable or identifier, like student ID is also an identifier. Since it only serves to identify the individuals, it is not usually counted as an actual variable. For example, it would make sense to compute the proportion of vehicles with manual transmissions, but it would not be interesting to compute the proportion of Subaru Imprezas since there is only one. (a) $[1\mathrm{pt}]$ What are the individuals in this dataset? (b) $[2$ pts] List all categorical variables in this dataset, you could ignore Make and Model as it is an identifier. (c) [2 pts] List all numerical (quantitative) variables in this dataset, you could ignore Make and Model as it is an identifier.