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# pandas.DataFrame.cov

`DataFrame.``cov`(min_periods=None)

  Compute pairwise covariance of columns, excluding NA/null values

  Parameters : | min_periods : int, optional Minimum number of observations required per pair of columns to have a valid result.
  Returns : | y : DataFrame

  Notes

  y contains the covariance matrix of the DataFrame’s time series. The covariance is normalized by N-1 (unbiased estimator).

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