EMC Proven Professional – Data Science and Big Data Analytics — Question 2

In which lifecycle stage are test and training data sets created?

Answer options

• A. Model building
• B. Model planning
• C. Discovery
• D. Data preparation

Correct answer: A

Explanation

The correct answer is A, as the model building stage involves the creation of test and training data sets to evaluate the model's performance. The other options do not pertain specifically to the generation of these datasets; model planning focuses on defining the problem and approach, discovery is about understanding the data, and data preparation deals with cleaning and organizing data.