Rate of Improvement 6-8% - runnersconnect dot net

I came across this article regarding a rate of improvement of 6-8% for new runners over the "Course of your training" - what defines the course of your training?

is that 6-8% improvement per day? per week? per month? per year?
Say I'm running a 10min mile for my easy runs, tomorrow I am not going be able to run 9:36(4% faster) for my easy runs consistently without being injured within a month or two. Neither should I run that pace in a week. How do I know what defines the length of training for 6-8%?

Here is the article:

runnersconnect.net

The Importance of Setting the Right Race Time Goal (and How to Find Yours)

@runners_connect

How did you pick your time goal for your race this fall? Here's a simple 3-step process you can use next time to ensure you don't sabotage your training by choosing the wrong goal time

Link:runnersconnect.net/setting-right-race-...