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.
Riddim is the Jamaican Patois pronunciation of the English word  rhythm , but in calypso, soca, dancehall and reggaeton parlance it refers to the instrumental accompaniment to a song.he second type is the ragga riddim backing raggamuffin and dancehall songs, such as the Juice riddim, produced by Richard Shams Browne. The third type is the digital riddim, such as Sleng Teng, Punany Riddim & Duck Riddim produced by King Jammy.