fully-joint-joint-distribution

05-20-2022 || 15:37
Tags: #probability

fully-joint-joint-distribution

In fully joint joint distribution if there are 3 randome variables, they all are dependent on each other. So you have to calculate all the combinations to calculate the joint distribution.

Mathematically, for a 3 random variable joint distribution,
The formula will be,

p(x,y,z)=p(x)p(y|x)p(z|x,y)

To calculate this, if we have 2 possible output of each RV, we have to generate a table with 23 rows.

x y z P
0 0 0 0.1
0 0 1 0.2
0 1 0 0.3
0 1 1 0.4
1 0 0 0.5
1 0 1 0.6
1 1 0 0.7
1 1 1 0.8

References