Placement diagnostic
24 short questions across Tracks 1–12 (two per track, easy to moderate). Your answers suggest the first track where it is worth starting; nothing is marked complete and there is no pass or fail.
- Questions
- 24
- Time
- Untimed
- Pass mark
- None — it recommends where to start
- Retake after
- 24 h
Skills covered
Classify variable types · Identify confounding variables · Choose a measure of centre · Calculate a standard deviation · Choose a chart for the question and variable types · Build and read box plots · Calculate conditional probabilities · Apply the addition rule · Calculate binomial probabilities · Calculate normal probabilities · Calculate the standard error of a mean · Describe probability sampling designs · Build a t interval for a mean · Interpret a confidence interval correctly · Compute and interpret a p-value · Compute a test statistic · Calculate and interpret Pearson's correlation · Fit a least-squares regression line · Calculate expected counts under independence · Choose a test from the study design and data · Analyse an A/B test: difference, interval, test and lift · Spot common experimentation mistakes · Produce naive, seasonal naive, mean and drift forecasts · Calculate MAE, RMSE, MAPE and MASE
The diagnostic recommends where to start. It never marks lessons as complete.
How it works
- Questions are drawn from this assessment's own bank, with numbers generated for your attempt.
- Your answers save automatically. Nothing is graded until you submit.
- No hints or feedback during the attempt; full worked solutions afterwards.
- You may use a calculator, the lab and your notes. The assessment is not proctored.