What is a statistic?
In this video I take a sample from a population [...]
Two tailed test
Two tailed test occur when the alternative hypothesis H1 is [...]
Critical values – upper tail test
In this video the following example is about finding the [...]
Critical values – lower tail test
Quite often we can find the critical value for a [...]
Upper tail test
In Luigi's restaurant, on average 1 in 10 people order [...]
Lower tail test
In this example I introduce you to hypothesis testing of [...]
Test for a binomial proportion
In this video, you are introduced to hypothesis testing for [...]
Sampling distribution of the mode and median
Following on from the distribution of the sample mean I [...]
Sampling distribution of the sample mean
In this video I take a sample from a population [...]
Simple random sampling
In this video I show you what we mean by [...]
The normal approximation to the Poisson distribution
In this video I show you how, under certain conditions [...]
The normal approximation to the binomial distribution
In this video I show you how, under certain conditions [...]
Poisson approximation to the binomial distribution
In this video tutorial I show you how the Poisson [...]
E(X) and Var(X)
In this tutorial you are shown the formulae that are [...]
Finding the mode from a p.d.f.
Finding the Mode From a Probability Density Function In this [...]
Finding the median quartiles and percentiles
In this tutorial I introduce you to how you calculate [...]
The cumulative distribution function, (c.d.f)
In the next tutorial I introduce you to the cumulative [...]
Calculating the mean μ and standard deviation σ
In some questions you are asked to find the mean [...]
Probabilities from a normal distribution using tables
When working with the normal distribution you will need to [...]
The standard normal distribution Z~N(0,1) – Using tables or calculator
The standard normal distribution Z~N(0,1) is very important as I [...]
The normal distribution
In this video, I introduce you to the normal distribution, [...]