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.
The drum kit is usually played seated on a drum stool or throne. The drum kit differs in general from those traditional instruments that produce melody or chords/pitch per se: even though drums are often placed musically alongside others that do, such as the piano or stringed instruments. The snare drum often does not match the kit, for example being a metal or plain wood shell in a kit where the other drums are in a matching finish. 2  Drummers tend to spend more time playing the snare and cymbals than the other drums. 3  Thin and/or bell-metal cymbals are easily broken by poor technique.