Podcast
Questions and Answers
Which of the following is the main purpose of data normalization?
Which of the following is the main purpose of data normalization?
What is the primary purpose of discretizing or aggregating data?
What is the primary purpose of discretizing or aggregating data?
Which of the following is a key step in the data cleaning process?
Which of the following is a key step in the data cleaning process?
What is the primary purpose of constructing new attributes by deriving new variables from the existing ones?
What is the primary purpose of constructing new attributes by deriving new variables from the existing ones?
Signup and view all the answers
Which of the following is a common technique used for data normalization?
Which of the following is a common technique used for data normalization?
Signup and view all the answers
Which of the following is a key data transformation technique used to reduce the number of values in categorical variables?
Which of the following is a key data transformation technique used to reduce the number of values in categorical variables?
Signup and view all the answers
What is the primary purpose of log transformations in data preprocessing?
What is the primary purpose of log transformations in data preprocessing?
Signup and view all the answers
Which of the following is a common method for discretizing numeric variables?
Which of the following is a common method for discretizing numeric variables?
Signup and view all the answers
What is the primary purpose of principal component analysis (PCA) in data preprocessing?
What is the primary purpose of principal component analysis (PCA) in data preprocessing?
Signup and view all the answers
Which of the following is a key step in the random sampling process for data preprocessing?
Which of the following is a key step in the random sampling process for data preprocessing?
Signup and view all the answers