Which of the following techniques would perform better for reducing dimensions of a data set?
A. removing columns which have too many missing values
B. removing columns which have high variance in data
C. removing columns with dissimilar data trends
D. none of these
Answer:A
Which of the following techniques would perform better for reducing dimensions of a data set?
A. removing columns which have too many missing values B. removing columns which have high variance in data C. removing columns with dissimilar data trends D. none of these