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.
James Wattâs Improvements. Finally, it was James Watt who revolutionized the steam engine by making use of a separate condenser in the original design. He came up with a separate condenser in 1765. The design saw itself take shape on a successful steam engine only 11 years later.