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Choose Effective Graphs for Data Exploration

AmazonData Scientist · Onsite
MediumData ScientistOnsiteAnalytics & Experimentation

Last updated

Evaluates chart selection for exploratory data analysis across categorical and numerical variables. Strong answers explain pie charts, distributions, comparisons, relationships, missingness, and when visuals mislead.

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.