Aiko chan
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#1
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Hey guys so I just had my first exam at uni. And the class SD is of 12% with mean of 71%...
(I never really paid attention on statistics at school 😅)

So I just wanted to know what exactly it means and is it good or bad...?
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Mr Wednesday
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(Original post by Aiko chan)
Hey guys so I just had my first exam at uni. And the class SD is of 12% with mean of 71%...
(I never really paid attention on statistics at school 😅)

So I just wanted to know what exactly it means and is it good or bad...?
So SD is a measure of the width of the marks distribution here, I would consider 12% to be a relatively tight distribution for an undergrad class, so not many super high flyers, not many really low marks – as you might expect given the pre selection of medics. I really recommend that you go review some basic stats if you want to be a medic however. Without that you have zero chance of properly understanding the uncertainties on statistical data next time you read a BMJ article on vaccine efficacy etc. For most people not understanding stats is just a bit sad, but for you its potentially life and death for your patients in the future. LD50 anyone ?
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Aiko chan
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U’re right I should go through a little of stats.
Thanks
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mnot
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(Original post by Aiko chan)
Hey guys so I just had my first exam at uni. And the class SD is of 12% with mean of 71%...
(I never really paid attention on statistics at school 😅)

So I just wanted to know what exactly it means and is it good or bad...?
Its a slightly tighter SD but the average is also high.

The standard deviation doesn't really mean a lot for your performance by itself. If your score was in the window of 59% to 83% you are in the core performers on your course (basically 70% of students performed in this range). below 59% and you are in the bottom 15% of your course above 83% top 15% performer. the further away from the average the more significantly good or bad you have performed.
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Aiko chan
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(Original post by mnot)
Its a slightly tighter SD but the average is also high.

The standard deviation doesn't really mean a lot for your performance by itself. If your score was in the window of 59% to 83% you are in the core performers on your course (basically 70% of students performed in this range). below 59% and you are in the bottom 15% of your course above 83% top 15% performer. the further away from the average the more significantly good or bad you have performed.
Thanks a lot I understand now 😅
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