Understand the structure
Start with columns, types, missing values and a useful summary.
DATA SCIENCE
Use plain-language questions to begin an investigation, check data quality and review the shape of the evidence.
Start with columns, types, missing values and a useful summary.
Specify variables, filters and comparisons. Check the interpretation carefully.
Work toward an explanation a colleague can understand and verify.
What changed in revenue this quarter?
In this sample, revenue rises across three months. March has the largest increase. A useful next step is to compare the change by channel.
Sample figures · USD
Illustration only. Review real outputs against your sources.
YOUR NEXT QUESTION HAS A HOME
Start with a question. Add your context. Make something useful.