Expectation and Variance
August 22, 2025
Learn how to compute the expectation and variance of random variables in both discrete and continuous cases, with clear definitions and examples.
ProbabilityBeginnerExpectationVariance
Beginner (13)
Articles about Beginner
13 articles found
Discrete Distributions
August 21, 2025
An introduction to key discrete probability distributions: the uniform, Bernoulli, and binomial distributions, with examples, expectations, and variances.
ProbabilityBeginnerDiscrete Distribution
Probability Distributions and Densities
August 20, 2025
Building on Laplace and Kolmogorov’s definitions of probability, this article explains the basics of probability distributions and density functions in a beginner-friendly way.
ProbabilityBeginnerProbability Distribution
Laplace and Kolmogorov Definitions of Probability
August 19, 2025
From Laplace's classical probability to Kolmogorov's modern axiomatic definition, explained step by step for beginners.
ProbabilityBeginnerProbability Theory
Boxplot and IQR
August 17, 2025
Learn how to read boxplots, calculate IQR, and detect outliers in data.
BeginnerData VisualizationOutliersBoxplotIQR
Descriptive Statistics
August 17, 2025
Instead of listing raw data, descriptive statistics use summary measures to convey the big picture quickly.
BeginnerDescriptive Statistics
Histogram Bin Size
August 17, 2025
An introduction to frequency distributions, histograms, and how to choose an appropriate bin width for visualization.
HistogramData VisualizationBeginner
Mean, Median, and Mode
August 17, 2025
Learn the basics of mean, median, and mode with clear examples and bar chart visualizations.
BeginnerMeanMedianMode
Types of Data
August 17, 2025
The very first step in learning statistics is understanding types of data. This article introduces qualitative vs. quantitative data, with clear examples of nominal, ordinal, discrete, and continuous variables.
Types of DataBeginner
Variance and Standard Deviation
August 17, 2025
A beginner-friendly guide to variance and standard deviation: definitions, calculation formulas, unbiased estimation, and why we square deviations.
BeginnerVarianceStandard Deviation
One-Way ANOVA
July 21, 2025
A beginner-friendly walkthrough of one-way ANOVA with visual insight into between- and within-group variance.
ANOVAvarianceBeginner
ATE, ATT, and ATC
July 20, 2025
A clear explanation of ATE, ATT, and ATC in causal inference, using a regression-based example with visual illustrations.
Causal InferenceRegressionBeginner
Simple Linear Regression
July 17, 2025
Understand linear regression through relatable examples, clear math, and a visual demo.
RegressionBeginner