Statistical Tests: Chi-Squared t-Test and Spearman Rank — Why Use Statistical Tests?; Hypotheses; Choosing the Right Test; Chi-Squared Test (χ²); Student's t-Test; Spearman's Rank Correlation Coefficient (rₛ)
Core Practicals and Experimental Design — The Importance of Practical Skills; Key Principles of Experimental Design; AQA Required Practicals; Evaluating Experiments; Presenting Data