They all have a mean of zero, but they have different standard deviations and, therefore, different widths. Each distribution curve has a total area of exactly 1.0, so the peak height is smaller when the SD is larger. For an IQ example (84, 84, 89, 91, 110, 114, and 116) where the mean is 98.3, you calculate the SD as follows: Meanings Italian Meaning: In Italian the meaning of the name Sergio is: Attendant. Latin Baby Names Meaning: In Latin Baby Names the meaning of the name Sergio is: Attendant. Jan 09, 2018 · The title literally translates to the "black mirror" you see on your electronics' screens when they're powered down, but its meaning runs deeper.