1. Probability and Venn Diagrams: Solving problems related to the probability of events using Venn diagrams, independence, and conditional probability. 2. Regression and Correlation: Calculating the product moment correlation coefficient, finding the regression line, and interpreting the gradient of the regression line. 3. Probability Distributions: Solving problems involving discrete random variables, including finding the expected value, variance, and probability distributions. 4. Box Plots and Statistics: Analyzing data using box plots, calculating interquartile range (IQR), and identifying outliers in statistical data. 5. Normal Distribution: Using the properties of the normal distribution to calculate probabilities and solve real-world problems, such as finding ranges for data. 6. Stem-and-Leaf Diagrams: Interpreting and creating stem-and-leaf diagrams, and using them to analyze statistical data, including finding the median, quartiles, and IQR.