Poisson Distribution Flashcards
1
Q
Conditions for poisson
A
- time of each event (or position) is independent of previous events
- probability of each event occurring in a given interval of time(space) is fixed
- two evens cannot occur at exactly the same time (or position)
2
Q
what is the poisson distribution?
A
is the rate at which events occur
(on average) in the required
interval of time or space
3
Q
Ppd
A
P=X
4
Q
Pcd
A
P less than or equal to X
5
Q
in poisson, what is the relationship between mean and varience
A
they are BOTH equal to lamda (the mean of s particular distribution)
6
Q
If there are two poissons and the question asks for something of EITHER type then…
A
you ad the means together and find the poisson from that