Lecture 1 - Chance and Probability Flashcards
1
Q
What is the multiplicative law?
A
The probability of a set of independent events all happening is the product of the individual probabilities (i.e. a AND b occurring).
2
Q
Multiplicative law =
A
P(A) x P(B)
3
Q
Combination rule =
A
N! / r! (N-r)!
4
Q
What does the N mean in the combination rule?
A
group size
5
Q
What does r mean in the combination rule?
A
pairs
6
Q
What does ! mean?
A
Factoral operation
e.g. 4! = 4x3x2x1
