I am horrible at math and we just received our midterm grades. I am trying to figure out how many people got which score in the class. All I know is the mean.
For example:
50 students
Average score: 72
How would I figure out how many people got this score? (I'm assuming it would be 25)
How do you figure out the score distribution in your class?

 Posts: 113
 Joined: Wed Sep 04, 2013 10:49 pm
 ph14
 Posts: 3226
 Joined: Mon Sep 12, 2011 11:15 pm
Re: How do you figure out the score distribution in your class?
Connor Benz wrote:I am horrible at math and we just received our midterm grades. I am trying to figure out how many people got which score in the class. All I know is the mean.
For example:
50 students
Average score: 72
How would I figure out how many people got this score? (I'm assuming it would be 25)
You can't figure out your distribution from just the mean.
For example, a mean of 5:
It could be 5 and 5
It could be 4 and 6
It could be 3 and 7.
You just can't tell from only that information.

 Posts: 113
 Joined: Wed Sep 04, 2013 10:49 pm
 ph14
 Posts: 3226
 Joined: Mon Sep 12, 2011 11:15 pm
Re: How do you figure out the score distribution in your class?
Connor Benz wrote:DAMN!
thanks!
No problem. Good luck.

 Posts: 79
 Joined: Tue Nov 27, 2012 10:30 pm
Re: How do you figure out the score distribution in your class?
http://en.wikipedia.org/wiki/Normal_distribution
this is probably your best approximation if you know absolutely nothing else about the distribution
this is probably your best approximation if you know absolutely nothing else about the distribution
 Dogg
 Posts: 103
 Joined: Thu Sep 19, 2013 8:44 am
Re: How do you figure out the score distribution in your class?
Connor Benz wrote:I am horrible at math and we just received our midterm grades. I am trying to figure out how many people got which score in the class. All I know is the mean.
For example:
50 students
Average score: 72
How would I figure out how many people got this score? (I'm assuming it would be 25)
prof didn't give the top score ?
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