6:54 Probability Scale - Corbettmaths
Corbettmaths clearly explains the 0-to-1 scale and words like likely and certain with exam examples.
The probability scale and terminology
Understand and use the probability scale from 0 to 1
4 hand-picked video lessons for this topic, each checked for relevance and clarity, graded by difficulty and labelled by depth. Press play to watch — nothing loads from YouTube until you do.
Sort
Level
Length
4 shown 6:54 
3:08 The Probability Scale
Maths Genie gives a short, sharp walkthrough of placing events on the probability scale.
7:28 Probability Scales // How to use Probability Scales
Maths Tutor Tom works through three examples of reading and marking probability scales.
2:59 GCSE Maths from Scratch 12.01 The Probability Scale
TLMaths introduces the probability scale from scratch in a quick, clear three minutes.