Statistical Data Analysis
BSc Course
5Lessons264Charts
1
Regression & Survival
2
Hypothesis Testing
3
PCA & EFA
4
Cluster Analysis
5
Time Series
T
Semester Thesis
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Semester Thesis: Employee Compensation Analysis
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Complete 10-page thesis with EDA, regression, hypothesis testing, PCA, and cluster analysis using Python
Prof. Joerg Osterrieder | February 2026 | Jupyter Notebook + HTML
Q
Interactive Quizzes (160 questions)
EXAM
Exam Practice - Written Questions
Start Practice
Multi-step derivations, proofs, worked examples (Medium + Hard)
Q01Regression & Survival
20 questions
Q02Hypothesis Testing20 questions
Q03PCA & EFA20 questions
Q04Cluster Analysis20 questions
Q05Time Series20 questions
S
Simple Quizzes - Beginner (60 questions)
S03PCA & EFA
20 simple questions
S04Cluster Analysis20 simple questions
S05Time Series20 simple questions
PDF
Quiz PDFs (100 questions)
C
All Charts (290)
3d Regression
Adjusted R2
Appendix Computational
Appendix Distance Points
Appendix Distributions
Appendix Leverage Influence
Appendix Matrix Form
Appendix Normal Equations
Appendix Ols Properties
Appendix Optimization
Appendix Point To Line
Appendix R Squared
Appendix Sse
Appendix Variance Decomposition
Assumptions Check
Autocorrelation
Boston Analysis
Boston Case
Business Application
Censoring Intuition
Censoring Methods Comparison
Censoring Problem
Censoring Types
Censoring Visual
Clinical Trial Example
Competing Risks
Cooks Distance
Correlation Causation
Correlation Examples
Cox Diagnostics
Cox Model
Cross Validation
Cure Model
Customer Churn
Diagnostic Workflow
Diagnostics Advanced
Distance Basics
Dummy Variables
Glm Families
Heart Case
Heteroscedasticity
Housing Example
Influential Points
Interaction Effects
Key Takeaways
Km Basics
Km Censoring
Km Comparison
Km Confidence
Km Construction
Km Curve
Km Formula Visual
Km Interpretation
Km Intuition
Km Median
Km Simple Example
Least Squares
Least Squares Visual
Logistic Basics
Logistic Curve
Logistic Extensions
Logistic Fit
Logistic Intuitive
Logit Transform
Logrank Example
Logrank Test
Lung Forest
Medical Application
Methods Comparison
Methods Overview
Mlr Advanced
Mlr Basics
Mlr Diagnostics
Mlr Example Results
Mlr Fit
Mlr Interpretation
Mlr Intro
Mlr Intuitive
Model Comparison
Model Workflow
Multicollinearity
Multiple Regression Concept
Multistate Model
Odds Interpretation
Optimal Line
Parametric Models
Partial Effects
Polynomial Regression
Prediction Intervals
Qq Plots
R Squared Visual
R Workflow
Regression Example Fitted
Regression Intro
Regression Types
Reliability Application
Residual Diagnostics
Residual Patterns
Roc Curve
Sample Size
Scatter Examples
Simple Regression Model
Simple Vs Multiple
Slope Intercept Visual
Survival Hazard Functions
Survival Intro
Survival Intuitive
T Distribution
Threshold Impact
Transformations
Anova Assumptions
Anova Concept
Anova Concept Minimal
Anova Decomposition Interactive
Anova Power Curves
Clinical Trial Boxplot
Clinical Trial Example
Confidence Intervals
Diagnostic Gallery
Education Boxplots
Effect Sizes Detailed
Effect Sizes Minimal
Error Types Matrix
Error Types Minimal
Homoscedasticity Tests
Hypothesis Framework
Hypothesis Framework Minimal
Interaction Plots
Multiple Comparisons
One Vs Two Tailed
P Value Interpretation
P Value Interpretation Minimal
Post Hoc Tests
Posthoc Tests
Power Analysis
Power Analysis Detailed
Power Analysis Minimal
Qq Plots Normality
Residual Diagnostics
Sample Size Calculations
Sample Size Curves
Significance Levels
T Distribution
T Distribution Minimal
T Test Types
T Test Types Minimal
Test Decision
Type Errors
Variance Decomposition
Assumption Check
Chi-Squared GoF
Clinical Trial
Complete Workflow
Correlation Comparison
Effect Size Overlap
Error Tradeoff
FDR (BH) Visual
Hypothesis Framework
Mann-Whitney U
Multiple Comp Inflation
Multiple Testing Crisis
Normality Tests
Permutation Test
Post-hoc Comparison
Power Curve
Power Quartet
Proportion Tests
Sample Size Curve
T-Test Decision
Tail Comparison
Two Sample Concept
Two-Way ANOVA
Variance Decomposition Visual
Variance Tests
Wilcoxon Signed-Rank
3d Scatter Eigenvectors
Biplot Comprehensive
Biplot Stepbystep
Communalities Chart
Correlation Matrix 3x3
Correlation Scatter Simple
Covariance Heatmap
Cumulative Variance
Dimensionality Problem
Efa Toy Example
Eigenvalue Importance
Eigenvalue Visual Step1
Eigenvalue Visual Step2
Eigenvalue Visual Step3
Eigenvector Intuition
Factor Model Diagram
Hauptachsen Visual
Latent Factors Simple
Loading Heatmap
Loading Matrix Heatmap
Parallel Analysis
Pc Directions 2d
Pc Projection
Pca 2d Example Simple
Pca 3d Plane
Pca Before After
Pca Camera Analogy
Pca Toy Example
Pca Vs Efa Analogy
Rotation Basic Concept
Rotation Before
Rotation Comparison
Rotation Promax
Rotation Varimax
Scree Efa
Scree Plot Elbow
Scree Plot Kaiser
Scree Plot Keywords Analogy
Simple Structure Good Bad
Variance Ellipse
Variance Explained Concept
Variance Visual Simple
Varimax Promax Visual
Agglomerative Steps
All Methods Comparison
Average Linkage Balanced
Clustering Motivation
Clustering Types
Complete Linkage Compact
Dendrogram Annotated
Dendrogram Cutting
Distance Basics Cluster Distances
Distance Basics Point To Point
Distance Geometric
Distance Metrics
Elbow Method
Gap Statistic
Hierarchical Process
Iris Clusters
Kmeans Algorithm Animated
Kmeans Convergence
Kmeans Initialization
Kmeans Steps
Kmeans Vs Kmedoids
Linkage Comparison
Manhattan Vs Euclidean Comparison
Method Comparison
Minkowski Family Visual
Outlier Sensitivity
Silhouette Intuition
Silhouette Plots
Single Linkage Chaining
Standardization Effect
Validation Metrics
Wards Equal Size
TS Introduction
Decomposition
Stationarity
White Noise
Random Walk
ADF Test
Differencing
ACF / PACF
AR Process
AR(1) Examples
MA Process
MA(1) Examples
ARMA Example
ARIMA Identification
ARIMA Notation
ARIMA Example
Box-Jenkins Flow
Seasonal Patterns
SARIMA Forecast
ETS Weights
ETS vs ARIMA
AIC / BIC Compare
Residuals (Good)
Residuals (Bad)
Volatility Clustering
GARCH Fit
GARCH Example
State Space
Kalman Filter
LSTM Architecture
ML Comparison
Algorithm Choice
Forecast Comparison
Naive vs ARIMA
Prediction Intervals
Accuracy Metrics
Cross Validation
CV Results
Worked Example 1
Worked Example 2
OLS
R-squared
t-statistic
ARIMA