There are two pieces of javascript code that should be on every page of your site. Here is an image of the code from the Taguchi Dashboard access page.
The top code should be placed somewhere in you head section (ie - <head>......</head>) of the page. The bottom code should be placed just BEFORE the closing body tag (</body>). If you want to place it with other javascript down there, that is fine as long as there is no HTML between the code and the closing body tag.
Notice this "Check Install" button in the image above. Clicking that button will tell you if the code is installed correctly.