The Following Information Regarding a Sample of Seven Students Is

The following information regarding a sample of seven students is provided.
Student Identification Grade Point Classification Gender Rank in
Number Average Class
Adam 1234 2.89 Senior Male 15
Brandon 8978 2.01 Junior Male 25
Jason 6578 3.97 Freshman Male 3
Marissa 2345 3.98 Sophomore Female 2
Michelle 8901 2.67 Senior Female 18
Wendy 7789 4.00 Senior Female 1
Webster 6780 3.77 Freshman Male 4
a. How many elements are in the above data set?
b. How many variables are in this data set?
c. How many observations are in this data set?
d. Which variables are categorical and which are quantitative variables?
e. What measurement scale is used for each variable?