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.
The harp is a chordophone with prominent strings. A chordophone is a musical instrument that makes sound by way of a vibrating string or strings stretched between two points. It is one of the four main divisions of instruments in the original Hornbostel-Sachs scheme of musical instrument classification.What many would call string instruments are classified as chordophones. Violins, guitars, lyres, and harps are examples.t is one of the four main divisions of instruments in the original Hornbostel-Sachs scheme of musical instrument classification. What many would call string instruments are classified as chordophones. Violins, guitars, lyres, and harps are examples.