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.
   Wh â¦ ile some argue that Santos Dummont (Brazilian) invented the  airplane while he was in France there is no evidence of any actual  physical works done to support the claim, there are no patents so  the credit goes to the Wright Brothers who filed the first patent.  The brothers Orville and Wilbur Wright were two Americans who are  gener â¦ ally credited with inventing and building the world's first  successful airplane and making the first controlled, powered and  sustained heavier-than-air human flight, on 17 December  1903 in Kitty Hawk, NC on December 17, 1903.