import math


def get_uncorrelated_stride(statistical_inefficiency):
    """Returns the integer index stride between uncorrelated samples
    in a time series.

    Parameters
    ----------
    statistical_inefficiency: float
        The statistical inefficiency of the time series.

    Returns
    -------
    int
        The integer index stride between uncorrelated samples
        in a time series.
    """
    return int(math.ceil(statistical_inefficiency))