Exam Questions – Discrete random variables
These questions are from another board but may help in [...]
Expected values E(X²)
I now show you the similarity of the function E(X²) [...]
Two tailed test
In this video you are shown a numerical example on [...]
Upper tail test
In this video you are shown two methods of calculating [...]
Lower tail test
In this video you are shown how to do a [...]
Test for a Poisson mean
In this tutorial you are shown the null hypothesis, alternative [...]
Expected mean E(X), the variance Var(X), cumulative distribution function F(X)
In this video, I now show you how to calculate [...]
Defining the pdf, calculating probabilities and quartiles
In this video, I now continue with a typical problem [...]
Continuous uniform / rectangular distribution
In this video, I introduce you to the continuous uniform [...]
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 probability from a p.d.f.
Here I show you how to sketch and calculate probabilities [...]
Finding the constant k in a p.d.f
A common question when dealing with probability density functions (p.d.f.) [...]
What is a probability density function (p.d.f.)?
In this tutorial I introduce you to what a probability [...]
Finding an observed value x
You can be asked to find an observed value as [...]
Changing the mean
In this tutorial I show you how to handle the [...]
Poisson distribution
In this tutorial I show you what a Poisson Distribution [...]
Linear combinations of discrete random variables
E(aX+b) and E(ax-b) In this tutorial I show you [...]
Variance, Var(X)
In this tutorial I show you the meaning of the [...]
Expected values E(X)
In this tutorial I show you the meaning of this [...]
Probability distribution tables
In this tutorial I show you how to construct probability [...]