Poisson distribution
Experiment
Test
test2
We draw
p
random points on an
n
x
n
grid.
for random values of
(
n
,
p
)
The current values are
n
=
5
and
p
=
76
.
Each cell contains
in average
λ
=
76
5
2
≈
0
points, but how many cells with exactly 3 points ? with 4 points ?
Number N of cells containing a given number of points : theory and observation
Given number of points
0
1
2
3
4
5
6
7
8
9
10
...
N
theoretical
0
0
0
0
0
0
0
0
0
0
0
...
N
observed
...
Test
test2