Using Your TI-83/84 Calculator: Binomial Probability Distributions Dr. Laura Schultz Statistics I This handout describes how to use the **binompdf** and binomcdf commands to work with binomial probability distributions.

ref 48 Statistics - Binomials (When to use: **binompdf** or binomcdf) To find on the calculator: 2 nd, vars, and scroll down n = sample size p = percent given r = number of successes (number looking for) 1.

In both cases, you need to enter n, p and x (number of trials, prob. of a single success, and number of successes) **binompdf** stands for binomial probability density function and binomcdf stands for binomial cumulative density function. 1.

Probability Distribution Commands on the TI-83 and TI-83 Plus **binompdf**(n, p [,x]) This command finds the probability that there are x successes in a binomial experiment with n trials and a probability of success p in a single trial.

Using Your TI-83/84 Calculator: Binomial Probability Distributions Elementary Statistics Dr. Laura Schultz This handout describes how to use the **binompdf** command to work with binomial probability distributions.

However, we will use a built-in feature on the TI-83 (and higher) models called " **binompdf** " to perform these calculations. Hit 2 n k n n k p p C k n p B ...

... **binompdf**(n,p,r) TI 86: bipdf(n,p,r) TI 89: binomial Pdf n = number of trials p = probability of success r = number of success Binomial probability P(X = r) ...

Page 1 of 1 \\RMHP\D\My Documents 2000\Word\Math\Reference\Stat_Ref\calculator_binomial_probabilities.doc To Find Binomial Probabilities On the TI-83 use the function **binompdf** (On the TI-86 use the function bipdf (Where are the functions on the calculator?

Press 2nd VARS to access the DISTR menu, then 0 to access the **binompdf** command. Type "15" followed by a comma, ".25" followed by another comma, then "3" for the number of desired "successes."

The former is given by the TI function **binompdf**(n,p,y) and the latter is given by binomcdf(n,p,y) To access these functions turn on your TI-84: ...