[R] Finding the mean.

[elliot.welch at virgin.net]

Using functions how would I go about do this question?

(I already have a mean defined for a function of x.)

Write a function called MyMean2. This function has two arguments, x and nonzero, where nonzero has the default value TRUE. This function should return the 

(Previous defined mean of x) if nonzero=FALSE

(Previous defined mean of x) for all x's>0 if nonzero=TRUE

Much appreciated.

elliot.welch at virgin.net
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