The mean value or score of a certain set of data is equal to the sum of all the values in the data set divided by the total number of values.A mean is the same as an average.ean. The mean value or score of a certain set of data is equal to the sum of all the values in the data set divided by the total number of values. A mean is the same as an average.
A: Between 1763 and 1775, James Watt invented a steam engine with an efficiency much greater than that of the other steam engines then in use. This new steam engine helped to power the Industrial Revolution.
THE END! The Inventor James Watt substantially improved on Newcomen's model and patented his own steam engine in 1769. Steam engines had previously depended on atmospheric pressure to push a piston (a sliding piece of metal moved by pressure) into a cylinder (a hollow tube) and create a vacuum by the cooling steam.