0
0.25
0.5
0.75
1
Impossible
Unlikely
Even chance
Likely
Certain
This diagram covers Probability Scale within Basic Probability for GCSE Mathematics. Revise Basic Probability in Probability for GCSE Mathematics with 13 exam-style questions and 20 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 3 of 7 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.
Practice questions for Basic Probability
Which value represents an impossible event on a probability scale?
Explain what is meant by theoretical probability and state the formula used to calculate it.
Quick recall flashcards
What is probability?
A measure of how likely an event is to occur, expressed as a number between 0 and 1
Can probability be negative?
No, probability must be between 0 and 1