Google just announced the new performance tab in the Google Analytics "Site Speed" report that will allow you to see a breakdown of the samples. You'll find the Site Speed report in the Content section of the new Google Analytics.
"This allows you to move beyond the averages and better understand your site's performance. For example, I'm looking at the Site Speed report for the Google Analytics blog. I can see that my average page load time is 7 seconds (we have some room to improve here). Now, we know that averages can hide what's happening underneath the surface," explains Trevor Claiborne, Google Analytics Team.
With the Performance tab in the Site Speed report, you can now dig in and find those details.
Claiborne explains further, that,
"almost half of my visitors (46%) are actually seeing decent load times of under 3 seconds. And another 32% are getting the page in under 7 seconds. But there's definitely still room to improve with a full 20% seeing 7+ second load times.
Taking this a step further, I can apply an advanced segment, in this case Visits with Conversions. I have set up the blog with engagement goals. So I'm trying to see if there's a relationship between page load time and engaging with the content here.
And looking at this data, it looks like there is. The distribution of visits with conversions is skewed towards fast-loading pages. As page load time increases, I am seeing a drop in conversions. I can actually see the business impact of a slow loading page.
Another type of segmentation to try would be by geography. To start off, try segmenting visits from your country versus visits not from your country. From there you may want to dig into specific countries and look at page load times."
To get site speed data, you need to make a small change to your Google Analytics tracking code. You can find setup instructions and more details about the Site Speed report in the Help Center.