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Free statistics course

Basic Statistics for Data Analysis / Module 1

Module 1 summary

Module 1 Summary: Statistical Questions and Data Claims

What You Practised

You practised how to turn a vague topic into a clear statistical question and a careful claim boundary.

Keep These Ideas

  • A data question asks what information is available.
  • A statistical question asks about a pattern, comparison, relationship, or uncertainty.
  • A decision question asks what action should be taken after the evidence is reviewed.

Writing Habit

In this sample, the short-lesson group had higher checkpoint scores, but this comparison alone does not prove that lesson length caused the difference.

Before Moving On

You are ready for the next module when you can explain the module idea without reading the answer key and can name the main unsafe claim to avoid.