Point distribution

Calculating the point distribution probability is where we find the probability of an exact number of successes in a fixed number of trials, given a certain probability of success on each trial.

For example, we might want to find the probability of getting exactly 3 heads when flipping a coin 5 times, given that the probability of getting heads on each flip is 0.5.

On a calculator, point distribution is often shortened to ‘PD’.

Conditions for a PD

We can do a point distribution on a distribution which can only take discrete variables, like the binomial distribution or poisson distribution.

• poisson point distribution
• binomial point distribution

For more info on why, see continous random point distribution.