13-12-2011, 10:54 AM
Hi Phil
Out of interest; why did you use the tenth highest grade? I can see why you wouldn't use the top grade for statistical reliability but surely an average would give a more reliable figure? Or am I missing something?
Out of interest; why did you use the tenth highest grade? I can see why you wouldn't use the top grade for statistical reliability but surely an average would give a more reliable figure? Or am I missing something?