Dear @steemstem, of the three variables presented on your chart: N(upvoted posts), N(unique authors) and % weekly VP; which is dependent on which?
I can also observe that between week 52 (2017) and week 10 (2018) when there was an up-shoot in #steem prices, all three variables were on the increase; is a way @steemstem can make contributions on STEM non-dependent on #steem prices.
Thank you for your anticipated response. I hope to resume contribution in #steemstem in a few days. You are doing a great job.
All those variables are independent. The number of unique authors is of course somehow correlated to the number of voted posts, but as each author can write several posts... The % VP used is connected to the used voting strengths that is not embedded in the other variables.
I hope this helps.
As you noticed, here is a correlation with the steem price ;)