Now letâs see what we get when we do the math. The mean of this new data set would be the sum of the values ($690,000) divided by the number of values (11). This gives you a mean or average salary for the accounting department of $62,727.
Forget Orville Wright and his brother Wilbur. Start thinking instead of Alberto Santos Dumont, the Brazilian pioneer aviator and the man who really invented the aeroplane. That is the attitude here in Brazil, as the country prepares to celebrate the centenary tomorrow of the world's first powered flight.
Hans von Ohain is considered the designer of the first operational turbojet engine while Frank Whittle was the first to register a patent for the turbojet engine in 1930. Though Hans von Ohain was granted a patent for his turbojet engine in 1936, it was Ohain's jet that was the first to fly in 1939. It was't until 1941 that Whittle's jet first flew. Sir Frank Whittle was an English aviation engineer and pilot.