Model Building - Describe Details of This Phase, Including Activities and Associated Roles DATA-SCIENCE-FOUNDATIONS Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   Which team member is primarily responsible for selecting and training machine learning algorithms during the model building phase?

   • AData engineer
   • BDatabase administrator
   • CData scientist
   • DBusiness analyst
   Reveal Solution Discussion Select an answer first
2. 12foundation · easy

   Which task is a typical activity in the model building phase?

   • ACollecting raw data from external sources
   • BWriting a final report for executive stakeholders
   • CDeploying the model to a production environment
   • DTraining the selected algorithm on the prepared dataset
   Reveal Solution Discussion Select an answer first
4. 13application · easy

   A manufacturing company is building a predictive maintenance model. The team has prepared sensor data and is now in the model building phase. The data scientist has trained several models and needs to select the best one. Which activity is part of the model building phase?

   • ATuning hyperparameters to improve model performance
   • BSetting up a dashboard to visualize model predictions in real time
   • CCleaning missing sensor values from the dataset
   • DCollecting additional sensor data from the factory floor
   Reveal Solution Discussion Select an answer first
5. 14expert · hard

   A retail company is building a demand forecasting model. The data scientist has developed a model, but the business team is concerned about the model's interpretability. The data engineer suggests using a complex ensemble model that may improve accuracy but is harder to explain. The business team needs to understand the factors driving demand. What should the team do?

   • AAlways choose the most complex model to maximize accuracy
   • BDeploy the complex model and provide a technical explanation to the business team
   • CBalance accuracy and interpretability by evaluating simpler models that meet business needs
   • DAsk the data engineer to simplify the data instead of the model
   Reveal Solution Discussion Select an answer first
6. 15application · easy

   A government agency is building a model to predict traffic congestion. The team has completed the data preparation phase and is now ready to build the model. Which activity is part of the model building phase?

   • ATraining the model on historical traffic data
   • BCleaning the traffic data to remove outliers
   • CCollecting new traffic sensor data
   • DSetting up a real-time dashboard for traffic predictions
   Reveal Solution Discussion Select an answer first