Question 1

1import pandas as pd
2
3# Assume a DataFrame df is already loaded with appropriate data.
4
5grouped_data = df.groupby('Category')['Quantity'].sum()

Consider the following Python code snippet using Pandas: import pandas as pd # Assume a DataFrame df is already loaded with appropriate data. grouped_data = df.groupby('Category')['Quantity'].sum() What does the `groupby` operation in the code achieve? Consider the below code: data = [[-6, 5], [-6, 5], [ 3, 1], [ 3, 1]] from sklearn.preprocessing import StandardScaler ss = StandardScaler() print(ss.fit_transform(data)) Which of the following option represents the print output : Consider the Ridge regression model in scikit-learn, represented by the Ridge class.\ Which of the following statements about Ridge regression is correct?