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Bicen Maths
Statistics
Probability
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Subdecks (2)
Tree diagrams
Bicen Maths > Statistics > Probability
3 cards
Venn diagrams
Bicen Maths > Statistics > Probability
6 cards
Cards (15)
If A and B are
mutually exclusive
:
P
(
A
∩
B
)
P\left(A\cap B\right)
P
(
A
∩
B
)
=
0
P
(
A
∪
B
)
P\left(A\cup B\right)
P
(
A
∪
B
)
=
P
(
A
)
+
P\left(A\right)\ +
P
(
A
)
+
P
(
B
)
\ P\left(B\right)
P
(
B
)
If A and B are independent:
P
(
A
∩
B
)
P\left(A\cap B\right)
P
(
A
∩
B
)
=
P
(
A
)
×
P
(
B
)
P\left(A\right)\ \times P\left(B\right)
P
(
A
)
×
P
(
B
)
P
(
A
∣
B
)
P(A|B)
P
(
A
∣
B
)
=
P
(
A
)
P\left(A\right)
P
(
A
)
What can't you tell from a venn diagram?
independence
What's the probability of the labelled area in this venn diagram?
A)
P(B|a)
1
What's the addition law?
P
(
A
∪
B
)
P\left(A\ \cup B\right)
P
(
A
∪
B
)
=
P
(
A
)
+
P\left(A\right)\ +
P
(
A
)
+
P
(
B
)
−
P
(
A
∩
B
)
\ P\left(B\right)\ -\ P\left(A\ \cap B\right)
P
(
B
)
−
P
(
A
∩
B
)
In conditional probability:
P
(
A
∣
B
)
=
P(A∣B)=
P
(
A
∣
B
)
=
P
(
A
∩
B
)
P
(
B
)
\frac{P\left(A\cap B\right)}{P\left(B\right)}
P
(
B
)
P
(
A
∩
B
)
See all 15 cards