Topic 1: Statistical Analysis




1.1.1 State that error bars are a graphical representation of the variability of data.


1.1.2 Calculate the mean and standard deviation of a set of values. (Use graphics calculator).


1.1.6 Explain that the existence of a correlation does not establish that there is a casual relationship between two variables.
  • A correlation between two variables may mean one causes the other.
  • However, the correlation does not confirm causality.
  • Experimental investigations are needed to study cause and effect
  • For example, there could be a high positive correlation between teenagers that watch the news each night and teenagers that own a pet dog.
  • It cannot be confirmed that one causes the other.

1 comment:

Lewis N. Clark said...

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