Japan Sales week 26, Jun 24 - 30 2019, Famitsu

[Amnesia]

nero said:

Amnesia said:

Ca you remind me the method to calculate this "baseline" ? I am a statistician in the automotive industry for 30% of my activity, so I was curious about this and I finaly decide to ask what is this thing.

Hi! Sure thing. Other user helped me with the method. It seems to be more accurate. Here are the steps:

1. Medium of all the weeks so far. Eg: the medium for the Switch in 2019 so far is 52.850

2. I get again the medium but only of the values that are lower than the "general medium" of number 1. Eg: There are 13 weeks that are lower than 52.850; using those values the new medium is 40.338

Hope it is clear, and if you have a better and more accurate method we can use, happy to know about it.

Ok. I am not 100% sure if this is the proper word but you take the "first quartile".

https://fr.wikiversity.org/wiki/Statistique_%C3%A0_une_variable/M%C3%A9diane_et_quartiles