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R Cheat Sheets

July 30, 2016

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R Cheat Sheet
R Cheat Sheets (a lot)
R Markdown Cheat Sheet
Data Visualization Cheat Sheet
Data Wrangling Cheat Sheet
DATA ANALYSIS THE DATA.TABLE WAY
Base R
R FUNCTIONS FOR REGRESSION ANALYSIS
R FUNCTIONS FOR TIME SERIES ANALYSIS

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Dentistry questions & answers

Which criteria should one look at when purchasing an electric toothbrush? From the medical perspective, the main outcome of using an electric toothbrush is if is capable to avoid, control or reduce two main dental diseases: periodontal and/or caries. Such kind of trials are costly in time and resources, hence manufacturers and researchers use some surrogate outcomes as dental plaque reduction for caries/periodontal and gingivitis reduction for periodontal disease. From the mode of action, powered toothbrushes can be classified as follow ( source ) : Side to side action, indicates a brush head action that moves laterally from side to side. Counter oscillation, indicates a brush action in which adjacent tufts of bristles (usually six to 10 in number) rotate in one direction and then the other, independently. Each tuft rotating in the opposite direction to that adjacent to it. Rotation oscillation, indicates a brush action in which the brush head rotates in one direction a

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