Choose Effective Graphs for Data Exploration
Company: Amazon
Role: Data Scientist
Category: Analytics & Experimentation
Difficulty: medium
Interview Round: Onsite
##### Scenario
Choosing appropriate visualizations during exploratory data analysis
##### Question
What is a pie chart? When should you use and not use a pie chart? What types of graphs are most useful during exploratory data analysis and why? How would you use a graph to explore the relationship between two variables?
##### Hints
Think about categorical vs numerical data, composition vs comparison charts, and scatterplots or heat-maps for relationships.
Quick Answer: This question evaluates a data scientist's competency in exploratory data visualization, specifically chart selection and interpretation for categorical and numerical variables to assess distributions, composition, and relationships within the Analytics & Experimentation domain.
