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.
Muse with pandouraThe Greek bouzouki is a plucked musical instrument of the lute family, called the tamboura family, in Greek. The tamboura has existed in Greece since ancient times, and can be found in various sizes, shapes, depths of body, lengths of neck and number of strings.he bouzouki is a direct descendant of the tamboura. The bouzouki is unquestionably a Greek musical instrument. The Greek marble relief, known as The Mantineia Base, dating from 330-320 BC, shows a muse playing a variant of the pandoura.