AWS Certified AI Practitioner (AIF-C01) — Question 44

A company is building an ML model. The company collected new data and analyzed the data by creating a correlation matrix, calculating statistics, and visualizing the data.
Which stage of the ML pipeline is the company currently in?

Answer options

• A. Data pre-processing
• B. Feature engineering
• C. Exploratory data analysis
• D. Hyperparameter tuning

Correct answer: C

Explanation

The correct answer is C, as the company is engaged in activities that involve examining and visualizing the data to understand its characteristics, which is the essence of exploratory data analysis. Options A, B, and D represent different stages of the ML pipeline, such as preparing data, creating features, and tuning model parameters, none of which focus on data exploration.