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.
Had Watt been one of that class, he could never have succeeded. Here we have another proof of the soundness of the contention that Watt, the mechanic, was almost as important as Watt the inventor. (Carnegie, Andrew James Watt, New York: Doubleday, Page & Company, May, 1905.) Roebuck was supportive of Watt and encouraged him to keep working on the pump. Watt was able to get a large engine to work well enough to apply for a patent, and Roebuck financed the engine patent that was granted in 1769.