for a standard normal distribution, which of the following variables always equals 1?\no $mu$\no $sigma$\no…
for a standard normal distribution, which of the following variables always equals 1?\no $mu$\no $sigma$\no $x$\no $z$
Answer
Explanation:
Step1: Recall properties of standard normal
A standard - normal distribution has mean $\mu = 0$ and standard deviation $\sigma=1$.
Step2: Analyze variables
- $\mu$ is the mean of the distribution, for standard normal $\mu = 0$.
- $\sigma$ is the standard deviation, for standard normal $\sigma = 1$.
- $x$ is a raw - score from the distribution and can take any real value.
- $z$ is the z - score, calculated as $z=\frac{x - \mu}{\sigma}$, and can take any real value.
Answer:
$\sigma$ (second option)