We have three independent qualitative variables.
First of all creating a dummy variable,
x1= 1, if grape picking method is manual, otherwise 0.
x2=1,if soil type is clay,otherwise 0
x3=1,if soil type is gravel,otherwise 0
x4=if slope orientation is east, otherwise 0
x5=if slope orientation is south, otherwise 0
x6=1,if slope orientation is west,otherwise 0
x7=if slope orientation is southeast, otherwise 0
a.Model of y as a function of soil type
b.Here, is the difference between soil type clay and sand.
d.Here the is the difference between soil type gravel and sand.
Note: Please ask rest part separately.
3. Production technologies, terroir, and quality of Bordeaux wine. In addition to state-of-the-ar...