Transcript
cOgscsjUvvE • What is a P-Value and Why Does it Matter?
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Kind: captions
Language: en
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if you assume that there's a process
that is completely random and you find
that it's pretty unlikely to get your
data then you might be suspicious that
something is happening you might
conclude in fact that it's not a random
process that this is interesting to look
at what else might be going on and it
passes some kind of sniff test
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statistically significant now this is a
terrible word it could be quite
insignificant you could be detecting a
very very very small effect but it would
be called in the mathematical lingo
significant
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P hacking is when researchers
consciously or unconsciously guide their
data analysis to get the results that
they want instant 0.05 is kind of the
the bar for being able to publish and
cause something real and get all your
grant money it's usually guiding the
results so that you arrive at that P of
0.05 the p-value was always meant to be
a detective not a judge if you do an
experiment and find a result that is
statistically significant that is
telling you that is an interesting place
to look and research and understand
further what's going on not don't study
this anymore because the matter is
settled
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