﻿ TrendLine(Series,Series,Int32) Method
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 dotnetCHARTING Namespace > ForecastEngine Class > TrendLine Method : TrendLine(Series,Series,Int32) Method

s
A statistical series.
deviations
A series wich contains the standard deviations of the given data point.
mwt
When this parameter is 0 the standard deviation will not be considered.
Given a set of data points x[0..ndata-1],y[0..ndata-1] with individual standard deviations sig[0..ndata-1], fit them to a straight line y = a + bx by minimizing ¥ö2. Returned are a,b and their respective probable uncertainties siga and sigb, the chi-square chi2, and the goodness-of-fit probability q (that the fit would have ¥ö2 this large or larger). If mwt=0 on input, then the standard deviations are assumed to be unavailable: q is returned as 1.0 and the normalization of chi2 is to unit standard deviation on all points.

# Syntax

Visual Basic (Declaration)
```Public Overloads Shared Function TrendLine( _
ByVal s As Series, _
ByVal deviations As Series, _
ByVal mwt As Integer _
) As Series```
Visual Basic (Usage)Copy Code
``````Dim s As Series
Dim deviations As Series
Dim mwt As Integer
Dim value As Series

value = ForecastEngine.TrendLine(s, deviations, mwt)``````
C#
```public static Series TrendLine(
Series s,
Series deviations,
int mwt
)```

#### Parameters

s
A statistical series.
deviations
A series wich contains the standard deviations of the given data point.
mwt
When this parameter is 0 the standard deviation will not be considered.