## Students Q and A

### Question

Number of replies: 3

What are the importance of Z-score and standard deviation?

### Re: Question

by Jeba fariha 201-34-1043 -

The standard score (more commonly referred to as a z-score) is a very useful statistic because it (a) allows us to calculate the probability of a score occurring within our normal distribution and (b) enables us to compare two scores that are from different normal distributions.

Standard deviation and the Z-score are two such fundamentals. Z-scores can help traders gauge the volatility of securities. The score shows how far away from the mean—either above or below—a value is situated. Standard deviation is a statistical measure that shows how elements are dispersed around the average, or mean

In reply to Jeba fariha 201-34-1043

### Re: Question

by Fouzia Akter -
very good