At the same shop, with a mean wait of five minutes and a standard deviation of two, Binh waits one minute. Where does that sit?

1. One minute is four minutes short of the five minute mean. 2. Each standard deviation is worth two minutes. 3. Four divided by two is two, so the wait is two standard deviations from the mean. 4. The wait is shorter than the mean, so it sits two standard deviations below it. _Source: OpenStax High School Statistics (CC BY 4.0), Ch 2 "Descriptive Statistics" and Ch 3 "Probability Topics", section 2.7 Measures of the Spread of the Data_