Other Applications DY0-001 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   Which of the following is a common application of signal processing in data analysis?

   • ACreating a bar chart of sales data
   • BRemoving noise from sensor data
   • CPerforming a SQL query to aggregate data
   • DJoining two tables in a database
   Reveal Solution Discussion Select an answer first
2. 22foundation · easy

   What is the primary goal of an agent in reinforcement learning?

   • ATo classify data into predefined categories
   • BTo minimize the number of actions taken
   • CTo cluster similar data points together
   • DTo maximize cumulative reward over time
   Reveal Solution Discussion Select an answer first
4. 23foundation · easy

   What is the fundamental concept of signal processing?

   • AQuerying relational databases to retrieve records
   • BStoring large volumes of data in a distributed file system
   • CAnalyzing and manipulating signals to extract information or improve quality
   • DCreating visualizations of data for presentations
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   In the context of anomaly detection, what does the 'local outlier factor' (LOF) measure?

   • AThe accuracy of a classification model
   • BThe degree to which a data point is isolated compared to its neighbors
   • CThe number of features in the dataset
   • DThe distance between a data point and the cluster centroid
   Reveal Solution Discussion Select an answer first
6. 25foundation · easy

   In the context of data science, which scenario is most appropriate for applying graph analysis?

   • AAnalyzing the spread of information through social media connections
   • BDetecting fraudulent credit card transactions based on transaction amount and frequency
   • CIdentifying clusters of customers with similar purchasing behavior
   • DPredicting house prices based on square footage and location
   Reveal Solution Discussion Select an answer first