You should integrate Google Analytics on your blog to get an insight into the traffic sources and update the settings and posts accordingly.
While this does not directly help in SEO of your blog, once you get to know which keywords people are using to land up on your blog, which search engines are sending you the traffic and other such information, you can make a plan to make suitable posts to serve these people.
I personally look at the bounce rate of the various pages on a high priority. If some pages have a high bounce rate, I check that to see if I can introduce some hooks to get people to stay longer on that page. You can add the related posts plugin to add some stickiness.
Don’t forget that your home page may have a high bounce rate because the repeat visitors will just read your latest post and go away.