How do you figure out the score distribution in your class? Forum

[Connor Benz]

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)

[ph14]

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.

[Connor Benz]

DAMN!

thanks!

[ph14]

DAMN!

thanks!

No problem. Good luck.

[POTUS2044]

http://en.wikipedia.org/wiki/Normal_distribution

this is probably your best approximation if you know absolutely nothing else about the distribution

[Dogg]

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 ?