It's called StatCrunch (www.statcrunch.com). There's a fee to use it, but it's pretty low. All my stats videos are developed around using this very straightforward, yet powerful, tool.
Happy to hear they're helpful. I keep meaning to go back and link the documents, but haven't gotten to it yet. But here's this one: drive.google.com/file/d/0B9DLhTnz0HZnd0xXZU9RLVNnazQ/view?usp=sharing&resourcekey=0-YtU7YfUMtg8RHafCW1sjqQ
