I'd suggest searching for "absolute growth rate" and "relative growth rate"
and choosing the metric most suited to your question of interest.

Sarah

On Monday, October 7, 2013, wrote:

> Hi,
>        This is not a sophisticated statistics question as the subject
> suggests. But I am logging data - number of user sessions in a web
> application - before and after new users are migrated. I use R to graph
> but I am looking for a way to quantify the growth in the number of user
> sessions. As more users are now using the web application there is a
> growth.
>
> What is the way to measure this growth if I have time and number of
> sessions in a two data sets - before the growth and after the growth ?
>
> Thanks,
> Mohan
>
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-- 
Sarah Goslee
http://www.stringpage.com
http://www.sarahgoslee.com
http://www.functionaldiversity.org

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