# Statistics interview question: How does one determine the tail of a graph?

Having never taken a formal statistics course in my education, I have been spending a lot of time studying the subject.

One question that may arise in an interview is how does one determine the tail of a graphic?

The answer to this question is that there are three types of tails in a graph, being right skewed, left skewed, and symmetric.

Right skewed

When a tail is right skewed, the right tail is longer and the distribution is concentrated on the left side of the graph.

The beta distribution can create a right skewed tail, depending on what the size and scale of the graph is. In the diagram below, I assigned an alpha of 2 and a beta of 5:-

Left skewed

When a tail is left skewed, the left tail is longer and the distribution is concentrated on the right side of the graph.

The beta distribution can also create a left skewed graph. In the graph below, I assigned an alpha of 5 and a beta of 2:-