How can i use dummyvar in fitlm

Hi I have database with 11 column inside with 10000 rows. when I have tried with numerical(year and mileage column ) it's giving me output(price) but when I am using text field ( make and model ) it is not giving me price ( Can I use dummy variable or dummy variable is just for numeric ?

c2=unique(X.Make) ?
d1=dummyvar(c2) ?
mdl=fitlm(X,Price~Make/c2)
.

Answer 1

[dpb]

dummyvar can also use categorical variables as well as numeric grouping