1 The level of significant difference you are hoping to show (e.g. p p value takes more study power. 2  The frequency of the outcome in the two groups. 3  Imagine an exposure that increases incidence by a third: it is easier to show a difference between 30 and 45 percent than between 10 and 15 per cent.
Name of Instrument: Bass drum. Family: Percussion. How to Play: The bass drum is played by using padded beaters or sticks and striking it against the drumhead. In a drum set, the musician plays the bass drum by using a pedal-operated stick. Types: The bass drums that are used in marching bands and military music have two drumheads.
Basics. Also known as the Pan, the Steel Drum is a percussion musical instrument that has been known to play any genre of music. The drum is a large 55-gallon oil drum that has been hammered together carefully and skillfully.It is tuned so that it can produce tones and has a chromatic range of notes.he steel drum can be used in all types of music including calypso, reggae, latin, brazilian, soca, pop, jazz and R&B, and is also used in orchestras and symphonies.