Objective 1.3 Classify a Question into a Known Data Science Problem CERTIFIED-DATA-SCIENCE-PRACTITIONER Practice Questions (Page 6)

Questions 26–30

1. 26foundation · easy

   A logistics company wants to minimize delivery costs by determining the optimal routes for its fleet, given constraints like vehicle capacity and delivery deadlines. This business question is best classified as which type of data science problem?

   • AOptimization
   • BRegression
   • CClassification
   • DForecasting
   Reveal Solution Discussion Select an answer first
2. 27foundation · easy

   A retail company wants to determine which of its customers are likely to churn in the next quarter, based on historical purchase data. This business question is best classified as which type of data science problem?

   • ASegmentation
   • BOptimization
   • CForecasting
   • DClassification
   Reveal Solution Discussion Select an answer first
4. 28foundation · easy

   Which of the following correctly describes a characteristic of structured data?

   • AIt consists of images and audio files
   • BIt is organized in rows and columns with a defined schema
   • CIt requires complex natural language processing to analyze
   • DIt has no predefined format and is often stored as free text
   Reveal Solution Discussion Select an answer first
5. 29application · medium

   A survey asks respondents to rate their satisfaction on a scale of 1 to 5 (1 = Very Unsatisfied, 5 = Very Satisfied). The responses are stored as integers. How should this data be classified?

   • AContinuous numerical data, because the values are numbers
   • BCategorical ordinal data, because the values have a meaningful order but unequal intervals
   • CCategorical nominal data, because the numbers are just labels
   • DDiscrete numerical data, because the values are integers
   Reveal Solution Discussion Select an answer first
6. 30expert · hard

   A video streaming service wants to recommend movies to users. They have user ratings, viewing history, and user demographics. They are considering collaborative filtering and content-based filtering. What is the most important factor in choosing between these two approaches?

   • ACollaborative filtering is always better because it does not require item features
   • BThe choice does not matter because both approaches produce the same recommendations
   • CCollaborative filtering relies on user-item interactions, while content-based filtering relies on item features and user profiles
   • DContent-based filtering is always better because it handles new users well
   Reveal Solution Discussion Select an answer first