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Section 2 · Lecture 05 · Intro to Probability
Random Variables
A random variable assigns a number to every outcome of an experiment, and its distribution follows from how many outcomes map to each value. Both explorers below work through that construction in full, one with dice, one with inheritance.
S2 · L05 · Tool
Two Dice
All 36 outcomes are equally likely, yet the sum is anything but. Click a value of Y to see exactly which outcomes map to it.
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S2 · L05 · Tool
Punnett Square
The same machinery with chromosomes instead of dice faces, four outcomes, three values of Y, and the 1 : 2 : 1 ratio it produces.
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