The Google AdWords filters allow you to look at just the data you want within your account. You can use filters throughout your account and save them for later use. To set up a filter, just specify the criteria you want. You can add additional rules to make your filter more specific. For example, you can set filters for clickthrough rate (CTR) and average position at the same time to see keywords with a high CTR appearing on the second page of search results. If you want to re-use the same filter repeatedly, you can save it by checking the Save Filter box.
Full Article: Google AdWords blog