data-sp500

sp500

Contains the returns of the S&P 500 stock index for the
years 2007--2010. The returns were computed as
<code>(Adjusted.Close-Open)/Open</code>.

Methods to determine, smooth and plot quantile (i. e., Laplace or
    copula) periodograms for univariate time series.

A univariate time series with 1008 observations; a <code>zoo</code> object