You move to a new city to start an exciting new job — Congratulations! — and you find a place to stay that the map suggests is about a 20 minute walk to work. Now that you’re in your new place, you check if there’s a quicker way to get in, and find a bus …
It can sometimes be hard to understand and remember the terms that statisticians use. This is understandable: statistics works with a lot of abstract concepts. But it helps when the terms are descriptive. For example, we have random variable: a value that varies depending on random events. We have estimator: a procedure or set of …
You take a peek out the window. It looks pleasant and calm. Fluffy white clouds shade the sun, birds are chirping and the trees are gently swaying in the breeze. You decide to head out for a walk. After a pleasant half hour out in the mild weather, you notice the wind pick up and …
Here is a Big Red Button: Don’t press it, wait till the very end of this post. What do you think the red button does? You might not know what to expect. Still, you will have some ideas, and you will assign more weight to some than others. These are your prior beliefs. Essentially, the …
A Bayesian network is traditionally defined as a directed acyclic graph (DAG), made up of nodes and arrows, coupled with discrete conditional probability tables (CPTs). If an arrow starts at one node and points to another, the first node is called the parent, and the second the child — but only for that arrow. Each …
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