There are much easier ways to select a group of data than using your mouse and dragging the cursor. Especially if your mouse occasionally tries to run away.
Depending on what you would like to highlight there are several different keyboard command that use the Shift key.
- Press CTRL+ SHIFT and then press one of your arrow keys and it will select all the data in that row or column in the direction of the arrow key you pressed.
- Press SHIFT and your arrow keys and you will be able to go cell by cell and select a very specific set of data.
- Press CTRL+SHIFT+END and you will select from your selection point to the lowest right hand cell.
- Press CTRL+SHIFT+* and you will select all the data in your document no matter where your selection point is.