- Basic Probability Theory
 - Probability Spaces
 - Conditional Probability
 - Independent and Dependent Variables
 - Random Variables
 - What are random variables?
 - Multivariate random variables
 - Discrete random variables
 - Continuous random variables
 - Functions of random variables
 - Creating random variables
 - Expectation
 - Expectation operator
 - Mean and Variance
 - Covariance
 - Conditional Expectation
 - Random Processes
 - What are random processes?
 - Mean and autocovariance functions
 - Independent identically distributed sequences
 - Gaussian process
 - Random walk
 - Convergence of Random Processes
 - Types of convergence
 - Law of large numbers
 - Central limit theorem
 - Monte Carlo Simulation
 - Descriptive Statistics
 - Histogram
 - Sample mean and variance
 - Order statistics
 - Sample covariance
 - Frequent Statistics
 - Independent identically distributed sampling
 - Mean square error
 - Consistency
 - Confidence Intervals
 - Nonparametric model estimation
 - Parametric model estimation
 - Bayesian Statistics
 - Bayesian parametric models
 - Conjugate prior
 - Bayesian estimators
 - Hypothesis Testing
 - What is hypothesis testing?
 - Parametric testing
 - Nonparametric testing
 - Multiple Testing
 - Linear Regression
 - Linear Models
 - Least-square estimation
 - Underfitting and Overfitting
 - Correlation
 - Regression
 
As a data science student, here are some key topics in statistics that you should focus on:
- Descriptive Statistics: Learn about measures of central tendency (mean, median, mode) and measures of dispersion (variance, standard deviation, range, interquartile range).
 - Probability Theory: Understand basic probability concepts, conditional probability, Bayes’ theorem, and different probability distributions like binomial, normal, Poisson, etc.
 - Inferential Statistics: Learn hypothesis testing (t-tests, chi-square tests, ANOVA), confidence intervals, and p-values to make data-driven decisions.
 - Regression Analysis: Study linear regression, multiple regression, and logistic regression for predicting outcomes and understanding relationships between variables.
 - Bayesian Statistics: This is increasingly used in machine learning, so having a good foundation in Bayesian reasoning can be beneficial.
 - Sampling and Resampling Methods: Learn about different sampling techniques and methods like bootstrap and cross-validation, which are essential for model evaluation.
 - Time Series Analysis: If you're dealing with sequential data (like stock prices or sales), learn about time series models, trend analysis, and seasonal decomposition.
 - Dimensionality Reduction: Study techniques like Principal Component Analysis (PCA) and t-SNE for reducing the complexity of data while preserving its structure.
 - Non-parametric Methods: Understand non-parametric tests that are used when data doesn't follow normal distribution assumptions, like the Mann-Whitney U test or the Kruskal-Wallis test.
 - Multivariate Statistics: Explore techniques for analyzing data with more than one variable, such as MANOVA and cluster analysis.