I think...
I know this may be too late, but while we're on the topic of stat.
Does anyone know how to do question 4 part e) for the second 2002 past paper...what kind of question is that T . T
i dont know, sorry. i thought perhaps it was because it was outside the sample data, but it isnt. unless they meant 55.
hmm...you might look at the correlation coefficient. its is very low. hence, only 0.1% of the variability in LOS is explained by the variability in age. therefore, it isnt sensible.
edit: post hopeful's question too if you got it handy.