Google added a couple of new features to their free analytical tool late last month, a few of which are available by now : Advanced Segmentation, Custom Reporting and Motion Chart.
Advanced Segmentation
Advanced Segmentation is a tool you can use to slice and dice your Analytics data with great precision. Advanced segments allow you to choose what types of visits you want to be considered when generating the data for a report.
Source : Google
One of the most important report we expect from an analytical software is traffic sources, it gives us visualization of where our web traffic are coming from. In Google Analytics, there are 3 primary sources of traffic: organic (traffic generated from search engine), referal and direct traffic. And with Advanced Segmentation, extra infomation would be displayed with each subsequent metric and dimension filter. Here are a few screenshots from our analytical report:

4 segments of traffic sources

4 segments of site usage

4 segments of content overview
Custom Reporting
Custom Reports are reports you create, save, and edit to give you a specific view of your data. You can choose the information and metrics you want to see, organized in the way you want to see it, by using a drag and drop interface to populate an Analytics report. You can also create tabs if you want to see related data - similar to a "Goal Conversions" tab - in effect creating multiple levels of sub-reports.
Source : Google
There are times when default report can barely satisfy your everchanging need of analytical information of your website, sometimes you want part of the metrics/dimensions to be added and some other times, part of the metrics/dimensions to be removed. And this is achievable with Custom Reporting.

Custom report
Motion Chart
Motion Charts add sophisticated multi-dimensional analysis to most Analytics reports. Select metrics for the x-axis, y-axis, bubble size, and bubble color and view how they interact over time.
Source : Google
Motion chart is useful when we're adding more than 2 metrics which the normal tabular report would seems limited and not presentational enough. With motion chart, we can assign one metric to x-axis and another metric to y-axis with additional metrics to size and color. See our graph:

Motion chart
Chart legends:
- y-axis represents average number of pages viewed per visit.
- x-axis represents number of visit
- the color signifies the average time on site, with blue color having the least amount of time and the subsequent colors to the right side after the blue signify the longer time on site with red the longest of all.
- size represents the bounce rate, the larger the circle, the higher the bounce rate.
The above chart is about New vs Returning visitors along with the average time on site and bounce rate. On top of the chart, there is a blue dot dated 10/22/08 with 66 new visits and 3 returning visits. It has 1.39 average pages per visit and almost 80 percent bounce rate.

written by Eddy, November 18, 2008
I am not sure if I understand you correctly but as there isn't any default percentage metric that you can apply straightly to your custom report, we might need to use the possible combinations of both custom segment and custom report to get close to what you're trying to achieve. Here I set it up, in 3 steps:
1. Create a custom segment, I named it "GT50S" which means count those visits with "Time On Page" greater than 50 seconds.
http://www.joomlavue.com/image...egment.jpg
2. Create a custom report with "Time On Page" and "Visits" as metrics and "Page Title" as single dimension. I saved it as "Visits > 50".
http://www.joomlavue.com/image...report.jpg
3. Open the custom report and apply the "Advanced Segments" with "All Visits" as Default Segments and "GT50S" as Custom Segments respectively.
http://www.joomlavue.com/image...gments.jpg
The final report is shown as follows:
http://www.joomlavue.com/image...gt-50a.jpg
http://www.joomlavue.com/image...gt-50b.jpg
written by project management, November 18, 2008


I would like to ask a question. I was using this advanced segmentation tool to tell for a period of time, what percentage of the visits to a group of pages have stayed there for longer than 50 seconds. The idea of combining two fields by "and", for example, "page" and "time on page" would not work for this. It actually tells how many visits stayed on any of my pages for longer than 50 seconds, and out of these, how many have paid visit to my difined group of pages. I wonder if you have ways of finding out?
Thanks a lot.