Tim Sevenhuysen is the founder and sole developer of Oracle's Elixir and provides a variety of consulting and contracting services throughout the esports industry. He is the former Director of Esports Analytics for 100 Thieves, served as Head of Data Science for Esports One, led Shadow.gg from 2017 to 2019, and was Statistical Consultant for Fnatic in 2015. Follow Tim on Twitter at @TimSevenhuysen.
Note: Scroll down to the data if you want to skip the introductory theory talk!
A team’s early-game performance is relatively easy to measure. We have a wide variety of metrics, like gold different at 15 minutes, first blood/dragon/Tower, and more.
In response to a Reddit post yesterday which listed the top Damage per Minute numbers from the NA/EU playoffs, one Redditor made this comment:
“This data is very skewed because CLG only won and never lost. It would be a lot less so if you just compared DPM from wins or just losses.”
I thought this was worth responding to in a bit more detail, to help people understand the concept of “win bias” and why, in my opinion, DPM isn’t one of the stats it heavily affects. Here’s an expanded version of what I wrote.
In League of Legends, there are some statistics that are a consequence of winning, rather than a cause of winning. We can call these stats “win-biased”.Continue reading Win Bias and Damage Per Minute→
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