| airship flagship lightship |
Airship: It is a self-propelled lighter-than-air aircraft with the means of controlling the direction of the flight.
Flagship: It is a ship carrying the flag officer or the commander of a fleet, or squadron. It displays the officer’s flag.
Lightship: It refers to a ship anchored in a specific location flashing a very bright light for the guidance of ships to avoid dangerous areas.
Find the mean deviation about the mean for the data 38, 70, 48, 40, 42, 55, 63, 46, 54, 44.