9 H

9.1 hierarchical model

A type of regression model that involves estimating both fixed effects and random effects.

See linear mixed effects model.

9.2 HTML

Hyper-Text Markup Language: A system for semantically tagging structure and information on web pages.

R Markdown scripts are often knit to HTML. Therefore, you can also include HTML and CSS (a way to control visual style) in your scripts.

Here is an example of some simple HTML.

<h1>My Title</h1>

<p>A paragraph of stuff...</p>

<ul>
  <li>List item</li>
  <li>Another list item</li>
</ul>

<img src="images/darwin.jpg" title="The cutest ferret">

9.3 hypothesis

A proposed explanation made on the basis of limited evidence as a starting point for further investigation.