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Graphic parameters quiz

Which one of the following proposition is true?

You can use the attached dataset data (the same as in the previous exercises) to play around with the parameters and test your knowledge.

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The function to tailor the chart parameters is par(), the option to change character size is cex, to display more than one chart on a single window you use mfrow

The function to tailor the chart parameters is par(), the option to change character size is mex, to display more than one chart on a single window you use cex

The function to tailor the chart parameters is main(), the option to change character size is cex, to display more than one chart on a single window you use mfrow

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