What Does Expected Return Mean in Coefficient of Variation?

sotellme
Messages
75
Reaction score
0
Please give me some hints on resolving this problem. Thanks!

For example there are 3 persons who run 2, 2 and 2 metres. n=3 and the mean of the metres is 2. Standard deviation is 2 (let us pretend so). The formula for Coefficient of Variation is ; Standard deviation/ Expected return.

I wonder what is Expected return in this case? Is that the mean value? Besides is the formula for Coefficient of Variation right? I have got it from this link http://www.investopedia.com/terms/c/coefficientofvariation.asp


Thanks
 
Physics news on Phys.org
sotellme said:
The formula for Coefficient of Variation is ; Standard deviation/ Expected return.
Yes.
sotellme said:
what is Expected return in this case? Is that the mean value?
Yes.
 

Thread 'Roulette wheel physics and probability'

Hi all, I've been a roulette player for more than 10 years (although I took time off here and there) and it's only now that I'm trying to understand the physics of the game. Basically my strategy in roulette is to divide the wheel roughly into two halves (let's call them A and B). My theory is that in roulette there will invariably be variance. In other words, if A comes up 5 times in a row, B will be due to come up soon. However I have been proven wrong many times, and I have seen some...
View full post »
Thread 'Detail of Diagonalization Lemma'

Thread 'Detail of Diagonalization Lemma'

The following is more or less taken from page 6 of C. Smorynski's "Self-Reference and Modal Logic". (Springer, 1985) (I couldn't get raised brackets to indicate codification (Gödel numbering), so I use a box. The overline is assigning a name. The detail I would like clarification on is in the second step in the last line, where we have an m-overlined, and we substitute the expression for m. Are we saying that the name of a coded term is the same as the coded term? Thanks in advance.
View full post »

Similar threads

I What is the expected (squared) coefficient of variation of a sample?
Replies
6
Views
3K
I Calculate the mean, variance, stdev, and CV with 2 methods: check answers
Replies
6
Views
2K
MHB Calculating statistical values from given data
Replies
1
Views
1K
Troublesome coefficient of variation question.
Replies
3
Views
6K
I T-distribution, standard error - how to interpret
Replies
7
Views
3K
I What does it mean to summate from 1 upwards to something less than 1?
Replies
13
Views
2K
B What's wrong with these formulas of standard deviation?
Replies
15
Views
2K
Understanding the meaning of "expected fraction" (Statistics)
Replies
4
Views
2K
I Understanding the transformation of skewness formula
Replies
3
Views
2K
Variations of the Variance Formula
Replies
6
Views
2K

Hot Threads

Recent Insights

Back
Top