Question

One way to measure the ability to find one’s way in an environment is to ask people to rate themselves on a Sense of Direction scale. In a sample of college students, including yourself, the mean rating of sense of direction is 30, with a standard deviation of 10. If your rating is 20, what is your z-score

Answer 1

\[z= \frac{x-\mu}{\sigma}\]
\( \mu \) is the mean (30 in this problem)\)
\( \sigma \) is the standard deviation (10 here)
x is 20 in this problem