A rough guide to Raw v JPEG but as Helol says it will run and run
When to use Raw
You need to post process the image
The white balance cannot be properly set with the camera
The scene contains high contrast
The image will be enlarged beyond the camera sensor's resolution
You can't decide whether to use Raw or JPEG
You are using infra-red filters
When to use JPEG.
All the Raw files won't fit in your memory card
You don't want to post process the image
You want to print the photos right away before you get to use a computer