R Binomial Distribution - r - learn r - r programming
- The binomial distribution model deals with finding the probability of success of an event which has only two possible outcomes in a series of experiments.
- For example, tossing of a coin always gives a head or a tail.
- The probability of finding exactly 3 heads in tossing a coin repeatedly for 10 times is estimated during the binomial distribution.
- R has four in-built functions to generate binomial distribution. They are described below.
r programming binomial distribution
- Following is the description of the parameters used −
- x is a vector of numbers.
- p is a vector of probabilities.
- n is number of observations.
- size is the number of trials.
- prob is the probability of success of each trial.
dbinom()
- This function gives the probability density distribution at each point.
- When we execute the above code, it produces the following result −
pbinom()
- This function gives the cumulative probability of an event. It is a single value representing the probability.
- When we execute the above code, it produces the following result −
qbinom()
- This function takes the probability value and gives a number whose cumulative value matches the probability value.
- When we execute the above code, it produces the following result −
rbinom()
- This function generates required number of random values of given probability from a given sample.
- When we execute the above code, it produces the following result −