Lesson 5.3Math~50 min

Distributions, mean & spread

Histograms, the bell curve, and measuring how spread out things are.

Module 5 · 0/9 done

The shape of chance

A distribution lists every possible outcome together with how likely it is. The easiest way to see one is a histogram: run an experiment many times and draw a bar for how often each result came up.

Fig 5.4Roll dice and add them up. With 1 die every result is equally likely (flat). With more dice, a bell shape appears — middle sums have many more ways to happen.

Check yourself

Why does the sum of 10 dice almost never come out as 10 or 60?

Complete the challenge above to continue.