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Machine Learning Practice, End Term

September 2023 term, 24 Dec 2023, Set FDD1

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Question 1

+2−0Single correct

Consider the following Python code using Pandas:

What does the groupby operation in the code achieve?

Select one option

A.
It calculates the total price for each category.
B.
It calculates the average price for each category.
C.
It groups the data by the ’Category’ column.
D.
It filters out rows where the ’Price’ column is zero.

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Consider the following Python code using Pandas: Figure from the original question paper What does the groupby operation in the code achieve? Consider the below code: data = [[-3, 1], [-3, 1], [ 3, 5], [ 3, 5]] from sklearn.preprocessing import StandardScaler ss = StandardScaler() print(ss.fit_transform(data)) Which of the following option represents the print output : Which of the following metrics indicate higher their value, better the regression model’s performance?