Sampling Techniques What is a population, a sample and the difference between them? The population refers to the whole set of things which you are interested in e.g. if a vet wanted to know how lon...
Normal Approximation of Binomial When can I use a normal distribution to approximate a binomial distribution? Why do we use approximations? If there are a large number of values for a binomial dist...
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...
