Data Wrangling in Notebooks Quiz

5 questions Pass: 70% +25 pts (50 with Pro)

Quiz covering Notebooks for Custom Model Training

What you'll be asked

  1. Which Python library is most commonly used in Jupyter Notebooks to perform data manipulation and analysis using DataFrames?
  2. When working with a large dataset in a notebook, which method is best practice for quickly inspecting the column names, data types, and non-null counts?
  3. You have a dataset with missing values in a numerical column. Which approach is generally preferred to maintain the integrity of your model training process?
  4. Why is it important to perform feature scaling (such as normalization or standardization) before training many machine learning models in your notebook?
  5. You are writing a notebook to prepare data for a model. You need to join two DataFrames on a common key, but you realize that one DataFrame has duplicate keys. What is the most likely outcome if you perform a standard 'merge' operation without handling the duplicates?

Answers and explanations come after you submit.