# XlTrendlineType enumeration

Specifies how the trendline that smoothes out fluctuations in the data is calculated.

**Namespace:**Microsoft.Office.Interop.Word

**Assembly:**Microsoft.Office.Interop.Word (in Microsoft.Office.Interop.Word.dll)

Member name | Description | |
---|---|---|

xlExponential | Uses an equation to calculate the least squares fit through points, for example, y=ab^x . | |

xlLinear | Uses the linear equation y = mx + b to calculate the least squares fit through points. | |

xlLogarithmic | Uses the equation y = c ln x + b to calculate the least squares fit through points. | |

xlMovingAvg | Uses a sequence of averages computed from parts of the data series. The number of points equals the total number of points in the series less the number specified for the period. | |

xlPolynomial | Uses an equation to calculate the least squares fit through points, for example, y = ax^6 + bx^5 + cx^4 + dx^3 + ex^2 + fx + g. | |

xlPower | Uses an equation to calculate the least squares fit through points, for example, y = ax^b. |

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