[plt-scheme] science fair help

Could his function take a list of lists?

Robby

On Sun, Dec 13, 2009 at 7:02 PM, Todd O'Bryan <toddobryan at gmail.com> wrote:
> I have a student who's doing a science fair project and needs to find
> the average for each location in a bunch (number unspecified) of
> lists.
>
> For example, given
>
> (list 1 3 5 7) (list 2 1 3 3) (list 3 8 1 5)
>
> he'd like
>
> (list 2 4 3 5)
>
> I can write the function pretty easily in Module by writing an average
> function that takes a variable number of arguments, but my attempts to
> do it in Intermediate or Advanced are pretty complicated. Is there a
> fairly easy way to do it in the teaching languages that I'm missing?
> If not, I can just put together a teachpack for him that provides that
> function so he can use it.
>
> Todd
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