The Raman spectra (Raman scattering intensity as a function of the Stokes and anti-Stokes frequency shifts) is dependent on the rovibronic (rotational and vibrational energy levels of the ground electronic state) states of the sample.s with single molecules, a given solid material has characteristic phonon modes that can help an experimenter identify it. In addition, Raman spectroscopy can be used to observe other low frequency excitations of the solid, such as plasmons, magnons, and superconducting gap excitations.
The mean, sometimes called the arithmetic mean, of this set is 33. The mean is the sum of all the numbers in the set (167) divided by the amount of numbers in the set (5). The median is the middle point of a number set, in which half the numbers are above the median and half are below. In our set above, the median is 30. But what if your number set has an even number of, er, numbers:
Popular Answers. Mean and median are often presented both as descriptive statistics, but this is actally not the case. The median is a central value of the data. It is that value for which one expects half of the (possible or observed) values being smaller and the other half being larger. It is more a coincidence that the mean also is (often, but nor always!) quite in the center of the data, but its derivation is completely different.