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.
Gustave Whitehead invented and flew the  world's first airplane in 1901, at Fairfield, CT. His monoplane,  called No. 21 or the Condor, was based on Count D'Esterno's and  Otto Lilienthal's designs.