Hi,
>
>I am trying to describe a data.frame by obtaining multiple crosstable summary
>statistics at once. I have tried table, xtab, crosstable, summaryBy and
>describe but none of these functions seems to allow muliple conparisons at
>once.
> Here, is what I would like to do:
>
>I have, for instance, age, sex (M and F), grade (1, 2, 3) and site (limb,
>trunk) and I want the, for instance, following summary statistics:
>- age (mean, SD) for males and age for females
>- age for grade 1, grade2, and grade 3
>- age for site limb, site trunk
>- sex (count, proportions) for grade 1, grade2, and grade 3
>- sex (count, proportions) site limb, site trunk (already have sex/age above)
>- grade (count, proportions) for site limb, site trunk (already have grade/sex
>and grade/age above)
>a
>lso, I want each of these not crossed by any others (mean overall age, numbers
>of males, etc) which could be seen as each crossed with its own.
>
>I have at least 10 variables, continuous, categorical ordered and non ordered.
>I don't want any tests.
>
>Any idea?
>
>David Biau.
>
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