Business Analysis

(a)
quantitative variables:gross area,total price,average price,age
qualitative variables:district,estate,floor,unit,transaction date

quantitative variables measure how much or how many; qualitative variables represent types or categories.

(b)
Nominal:district,estate,unit,transaction date
Ordinal:floor
Interval:age
Ratio:gross area,total price,average price

(c)
Descriptive statistical study:The average price for each square feet
Inferential:Using Gross area, age , floor to predict the sale price of an apartment