Probability and Statistics Basics
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From counting to inference: foundational probability and statistics for everyday decisions.
10 content steps
4 quizzes
~210 minutes
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Journey Overview
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Journey Steps
Preview
1
Content Step 1
Content
Sets, counting, and basic combinatorics
2
Content Step 2
Content
Sample spaces, events, and probability rules
3
Content Step 3
Content
Conditional probability and Bayes’ rule (intuition)
4
Quiz 4
Quiz
Checkpoint Quiz
5
Content Step 5
Content
Random variables and distributions
6
Content Step 6
Content
Expectation, variance, and standard deviation
7
Content Step 7
Content
Common distributions: Bernoulli, Binomial, Normal
8
Quiz 8
Quiz
Checkpoint Quiz
9
Content Step 9
Content
The Central Limit Theorem (conceptual)
10
Content Step 10
Content
Confidence intervals and hypothesis testing (basics)
11
Content Step 11
Content
p‑values, errors, and practical significance
12
Quiz 12
Quiz
Checkpoint Quiz
13
Content Step 13
Content
Correlation vs causation and simple regression
14
Quiz 14
Quiz
Checkpoint Quiz
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