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.
1.1.3 State that the term standard deviation is
used to summarize the spread of values around the mean,
and that 68% of the values fall within one
standard
deviation of the mean.
1.1.4 Explain how the standard deviation is useful
for comparing the means and the spread of data between
two or more samples.
1.1.5 Deduce the significance of the difference
between two sets of data using calculated values for t
and the appropriate tables.
1.1.6 Explain that the existence of a correlation
does not establish that there is a causal relationship
between
two variables.
