Description Usage Arguments Details Value Examples

Generate a string with symbolic expression for expectation of powers and products of non-central (raw) sample moments of an arbitrary order.

1 | ```
one_combination(powvect, smpsize = "n")
``` |

`powvect` |
vector of |

`smpsize` |
symbol to be used for sample size. |

For a zero-mean random variable `X`

and a sample *X[1], ..., X[n]*, find *E(X-bar^{j_1}
{X^2}-bar^{j[2]} \cdots {X^m}-bar^{j[m]})*, where *{X^k}-bar = sum_{i = 1}^n X[i]^k* is a *k*'th
non-central sample moment. The expression is given in terms of sample size
and true moments *μ[k]* of *X*. These expectations can
subsequently be used for generating unbiased central moment estimators of an
arbitrary order, Edgeworth expansions, and possibly solving other
higher-order problems.

A string representing a symbolic expression for further processing
using computer algebra (e.g. with *Sage* or *SymPy*), for
calculating numeric values, or to be rendered with *Latex*.

1 | ```
one_combination(c(5, 0, 2, 1))
``` |

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