Using z-scores to compare scores across different data sets

What this note covers

1. What is a z-score and why does it matter?
2. Interpreting z-scores on the normal distribution
3. Comparing performance across different assessments
4. Reverse calculation: finding a raw score from a z-score
5. Application to quality control
6. Comparing two different populations
7. Exam strategy and key techniques

7 sections · 12 key terms & formulas · 6 common mistakes