 for examples in Friendly, Fox &amp;amp; Monette (2013),
giving an index of cardiac damage (Heart)
in relation to a measure of daily coffee consumption (Coffee)
and Stress, a measure of perceived occupational stress,
in a contrived sample of \(n = 20\) university people."><meta property="og:image" content="http://friendly.github.io/matlib/logo.png"><link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.11/dist/katex.min.css" integrity="sha384-nB0miv6/jRmo5UMMR1wu3Gz6NLsoTkbqJghGIsx//Rlm+ZU03BU