The mean (or average) of a set of data values is the sum of all of the data values divided by the number of data values. That is: The marks of seven students in a mathematics test with a maximum possible mark of 20 are given below: 15 13 18 16 14 17 12. Find the mean of this set of data values.
The name dubplate also refers to an exclusive, 'one-off' acetate disc recording pioneered by reggae sound systems but also used by drum and bass and other electronic music producers, DJs and sound systems.he name dubplate also refers to an exclusive, 'one-off' acetate disc recording pioneered by reggae sound systems but also used by drum and bass and other electronic music producers, DJs and sound systems.
Reggae's direct forefather is ska, an uptempo, rhythmic variation based on the New Orleans R&B Jamaican musicians heard broadcast from the US on their transistor radios. Relying on skittering guitar and syncopated rhythms, ska was their interpretation of R&B and it was quite popular in the early '60s.