What did you learn in statistics? Have you studied statistics? What is the difference between mean and median?

In my statistics coursework, I learned descriptive statistics, probability distributions, hypothesis testing, and regression analysis. I studied concepts such as mean, median, mode, variance, standard deviation, and how to interpret them. The mean is the arithmetic average of a dataset, calculated by summing all values and dividing by the count. The median is the middle value when the data are sorted; if the count is even, it is the average of the two middle values. The mean is sensitive to outliers, whereas the median is more robust to extreme values.