Importance of Bounce Rate:
1. Someone that bounces from your site (obviously) didn’t convert. So when you stop a visitor from bouncing, you can also increase your conversion rate.
2. Bounce Rate may be used as a Google Ranking factor. In fact, one industry study found that Bounce Rate was closely correlated to first page Google rankings.
3. A high Bounce Rate lets you know that your site (or specific pages on your site) has issues with content, user experience, page layout or copywriting.