This video on Google Analytics shows you how to:
1 – Filter out or exclude specific countries from your Google Analytics account data.
2 – Include only data from a specific country in your Google Analytics data
3 – Create a reporting Segment to filter out specific countries
4 – Create a reporting Segment to show only one Country in the Google Analytics Reporting data
*Note – creating Filters only works for future data. To see past recorded data (without the bad data) you need to create Segments in the Reporting Tab
– You will need to choose and apply a Segment from the Segment list area in the Reporting Tab to see it
Please visit http://www.yangilbert.com/exclude-specific-countries-google-analytics for the full article and let me know if this has helped you or have any questions.