# Z-Score Calculator

Instructions: This statistics calculator will compute the Z-score associated with a raw score X. Please provide the information required below:

Population Mean ($$\mu$$)
Population St. Dev. ($$\sigma$$)
Raw Score ($$X$$)

#### How Do You Compute a Z-Score?

More about Z-scores so you can better understand this z-scores calculators: The normal probability is a type of continuous probability distribution that can take random values on the whole real line. A random variable X that has a normal distribution with mean $$\mu$$ and standard deviation $$\sigma$$ can be standardized or normalized to a standard normal distribution (with mean 0 and standard deviation 1), by using the following formula:

$z = \frac{X-\mu}{\sigma}$

The above is referred to the z-score associated to the original X score.

0