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st095 24_s_Causal inference

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    These first two options are again
    observational studies, and they can't tell
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    us causation. If hours slept were the
    dependent variable and Temporal Memory
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    Score were the independent memory
    variable, we would get the same type of
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    relationship. It would pretty much be the
    same exact graph just reflected across the
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    line y=x.
    And if we looked at the relationship
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    between sleep and forgetfulness, we'd
    again be doing an observational study, but
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    we'd probably find a negative
    relationship. For example, if this were
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    forgetfulness instead of temporal memory
    score, we might find that people who
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    didn't sleep that much had high
    forgetfulness levels. And people who slept
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    a lot have low forgetfulness levels,
    meaning they remember things better. But
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    again, this just shows a correlation, not
    causation. These last two, however, could
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    provide some help.
Cím:
st095 24_s_Causal inference
Video Language:
English
Team:
Udacity
Projekt:
ST095- Statistics
Duration:
0:57
Cogi-Admin edited Angol subtitles for st095 24_s_Causal inference
Cogi-Admin edited Angol subtitles for st095 24_s_Causal inference
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