Episode 2|Simple Linear Regression

Episode 2|Simple Linear Regression

This episode introduces simple linear regression as a tool for understanding trends and making predictions from data. We begin with the historical insight of Francis Galton, whose study of the relationship between parents’ and children’s heights helped popularize the idea of describing association with a straight line.

Building on this intuition, we explain the meaning of the slope and intercept in practical terms, and how they connect to interpretation and prediction. We then emphasize why it is important to check whether a linear model is appropriate before trusting it—using scatter plots and residual plots to detect nonlinearity, unequal variability, and unusual observations.

Finally, we discuss how to judge whether the model is actually useful: how much it explains the variation in the data, what to look for in common regression output, and how these ideas translate into practice through simple examples.

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Jaksot(13)

Episode 13 | Survival Analysis: Making Sense of Time-to-Event Data

Episode 13 | Survival Analysis: Making Sense of Time-to-Event Data

In this episode, we introduce the core ideas behind analyzing time-to-event data—situations where the outcome isn’t just “what happened,” but when it happened. A key challenge is that some participant...

3 Helmi 41min

Episode 12 | Clustering and Classification: Finding Structure in Data

Episode 12 | Clustering and Classification: Finding Structure in Data

In this episode, we step into multivariate thinking and ask a practical question: when do data points naturally form “groups,” and how can we use those groups to make decisions?We walk through how gro...

3 Helmi 38min

Episode 11 | Finding Structure in Multivariate Data

Episode 11 | Finding Structure in Multivariate Data

This episode is about what to do when your data has many variables at once. We start with the basic idea of how variables “move together” (correlation and covariance), and why that matters for underst...

2 Helmi 44min

Episode 10 | From Chi-Square to GLMs: Beyond Linear Regression

Episode 10 | From Chi-Square to GLMs: Beyond Linear Regression

This episode is about working with categorical outcomes—questions where results fall into categories rather than a numeric scale. We learn how to check whether two variables are related, how to model ...

2 Helmi 36min

Episode 9 | Categorical Data in Practice: Measures of Association, and Simpson’s Paradox

Episode 9 | Categorical Data in Practice: Measures of Association, and Simpson’s Paradox

In this episode, we start with Fisher’s “Lady Tasting Tea”—a classic reminder that good questions need good experimental design. Then we shift from continuous outcomes to categorical data: how a simpl...

2 Helmi 41min

Episode 8 | Two-Way ANOVA and Beyond

Episode 8 | Two-Way ANOVA and Beyond

This episode moves from one-way ANOVA to two-factor randomized experiments, focusing on how to test main effects and, more importantly, interactions—when the effect of one factor depends on the level ...

1 Helmi 36min

Episode 7 | Design of Experiments

Episode 7 | Design of Experiments

This episode introduces the core logic of experimental design and ANOVA: what we mean by causality, factors, and confounders—and why randomization, replication, and blocking are the practical tools th...

1 Helmi 31min

Episode 6 | Model Selection Strategies

Episode 6 | Model Selection Strategies

Episode 6 is about making multiple regression work in real life: how to choose predictors without overfitting, when to transform variables to fix messy variance or nonlinearity, and what to do when pr...

1 Helmi 37min

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