Will be able to use ? on exam

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    Does anyone know for sure whether we can use the “?” inside R during the actual exam? For example can i type “?predict” to get help on model predictions


    Hi Porkins,

    Yes, this works.  The ? is part of the R libraries which are installed on the Prometric computers.  There is no internet connection, but this is not needed because the files are local.

    For example, here are a two of the useful references, which are included in our 14 pages of cheat sheets:

    • ?family and ?make.link for GLMs.  This is useful when choosing the link function and response family for genaralized linear models.  The default arguments are the canonical links.
    • ?stepAIC and ?AIC for formulas of the penalized log likelihoods.  Use this if you are unsure of whether a higher or lower AIC/BIC is better or worse.

    Best regards,

    Sam Castillo

    Course Instructor at ExamPA.net

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