Modelling with Distributions When should I use a binomial distribution? A random variable that follows a?binomial distribution?is a?discrete random variable A binomial distribution is used when the...
Finding Sigma and Mu How do I find the mean (μ) or the standard deviation (σ) if one of them is unknown? STEP 4:?Solve?the equation How do I find the mean (μ) and the standard deviation (σ) if both...
Normal Distribution - Calculations Calculating Normal Probabilities How do I find probabilities using a normal distribution? It is likely that your calculator has a function that can find normal pr...
Standard Normal Distribution What is the standard normal distribution? ?The?standard normal distribution?is a normal distribution where the?mean is 0?and the?standard deviation is 1 It is denoted b...
Properties of Normal Distribution The binomial distribution is an example of a discrete probability distribution. The normal distribution is an example of a?continuous?probability distribution. Wha...
Properties of Geometric Distribution What is a geometric distribution and its notation? A?geometric?distribution?is a?discrete probability distribution Each trial has only two outcomes Broadly labe...
Calculating Binomial Probabilities Where does the formula for a binomial distribution come from? The formula allows statisticians to quickly find probabilities for larger values of?n?without needin...
Properties of Binomial Distribution What is a binomial distribution? A binomial distribution is a?discrete probability distribution The?discrete random variable?X?follows a?binomial distribution?if...
E(X) & Var(X) (Discrete) What does E(X) mean and how do I calculate E(X)? E(X)?means the?expected value?or the?mean?of a?random variable X For a?discrete?random variable, it is calculated by: L...
