Standard deviation is the square root of variance, but variance is given by mean, so divide by number of samples. That is : 38.5/10 = 3.58. But standard deviation equals the square root of variance, so SD = the square root of 3.85 which is 1.96.
The virginal(s): The virginal, also called virginals, usually has a rectangular case with the keyboard across the wide side. As with the spinet, the strings run side-to-side relative to the player. Again, it saves on wallspace, and again they rate their own FAQ. Virginals were fairly early, 15th and16th centuries.
These string music terms are the names of instruments: 1  Violin: The violin or âfiddleâ is a string instrument which is played with a bow. 2  Viola: The viola is a little bit bigger then the violin. 3  Cello: The cello is much larger then the violin or viola. 4  Bass: The Bass is the largest instrument in the string family.