When working with a large data set, having to use the scroll wheel on a mouse can eat up a lot of valuable time. This video shows how to use the CTRL and SHIFT buttons, in combination with the arrow keys, to quickly navigate through your data set. Great for students with a laptop that doesn't have a large screen, or a trackpad or mouse that is temperamental. You might only be saving a few seconds here and there, but those seconds add to minutes and hours over time.