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.
All About that Bass Drum Pedal. Drums can be a very personal thing. Each drummer has a certain sound that they aspire to, certain sticks they prefer, and certain cymbals that make them feel most at home behind their kit. Though often overlooked, one of the most personal parts of a drummer's arsenal is easily the bass drum pedal.