Yes. Any statistics buffs here who can tell me:
Is 500k brits for 1 week as good as 5k brits for 100 weeks.
Effectively with so much data aren't you getting a superposition anyway.
Is 500k brits for 1 week as good as 5k brits for 100 weeks.
Effectively with so much data aren't you getting a superposition anyway.
In statistical mechanics there's a concept of "ensemble average" and its provable that if you have a system, the average state of the system over say a 100 realisations ("ensemble average") run for 1 second each, is equal to the the average of one system run for a 100 seconds - under some assumptions of course.
I don't know enough a about human biology to make a statement about whether any of those assumptions will hold true, but maybe someone else will.
In the similar way sampling the height of 1000 of 1M people will give you a good estimate of the average.
The weeks that were measured in this study were not random. How far from random is the big question.