Calculates vector of balances based on initial balance and vector of ratios from
one time point to the next (i.e. proportion gains + 1). The formula is simply:
initial * cumprod(ratios).
Numeric vector of ratios between subsequent investment prices (i.e. proportion
gains + 1). For example, if a stock gained 3%, lost 1%, then lost 2%,
Numeric vector indicating balance at each time point.
Dane R. Van Domelen
Acknowledgment: This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under Grant No. DGE-0940903.
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