Statistics, samples and uncertainty
Separate observed differences from supported conclusions.
What you should be able to do
Describe a distribution and its limits of inference.
A short guide
Compare mean, median and distribution on the same dataset. Document sampling and exclusions. Align units, periods and denominators before comparing groups. Keep correlation separate from causation, and state both a supported conclusion and an unresolved question.
An example
Mean 6, median 3; the value 18 pulls the mean upward.
Your task
Calculate the mean and median of 2, 3, 3, 4, 18 and discuss a typical observation.
Start with this source
Descriptive statistics, mean/median, sampling and correlation.
This source is awaiting renewed review. Try the task above and adjacent skills; reviewed sources will appear here.
Your learning checklist
Required items: 0 / 10 completed or already known
Next: Read a role through its responsibilities
Checklist statuses are self-reported; exercise scores are recorded separately. You can reset any item.