Data Science Simplified

Learning the Machine Learning, in a Human-friendly Way

Tricky Data Science Interview Questions (With Answers)

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Question : If we want to estimate the number of trees along the road from Place A to Place B (for example, from your residence to the place ...

Sampling Methods

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Sampling methods or sampling techniques. Probability Sampling Techniques Simple Random Sampling Systematic Sampling Stratified Sampling Clus...

Market Basket Analysis made simple

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Market Basket Analysis helps to discover associations between items in customers' purchases. It reveals patterns like: "Customers ...

Timeless Statistical Concepts Every Data Scientist Must Master - With Links to Visual Illustrations & Examples

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In this blog post, I will outline the foundational statistical concepts that are essential for every Data Scientist to know. These concepts ...

Non-linear Relationships: When a 0 Pearson Correlation Coefficient Can Be Surprisingly Meaningful

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We know that Pearson correlation coefficient (r) ranges from -1 to +1. And a zero Pearson correlation coefficient means there exists no line...

Understanding Confidence Intervals with an Intuitive Example

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The concept of confidence intervals (CI) is commonly used in data science. Hence, using an intuitive example, let us learn it with confidenc...

Standard Deviation vs Standard Error: Clearing up the Confusion with Visual Examples

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Standard deviation and standard error are two statistical concepts that are often confused with each other. Though these two measures are re...