Ùlistname

Identifies the next one to five characters as a user-created list name.

LabelOff

Turns off axes labels.

LabelOn

Turns on axes labels.

Lbl label

Creates a label of one or two characters.

lcm(valueA,valueB)

Returns the least common multiple of valueA and valueB, which can be real numbers or lists.

length(string)

Returns the number of characters in string.

Line(X1,Y1,X2,Y2[,erase#,color#,linestyle#])

Draws a line from (X1,Y1) to (X2,Y2) with the following options: erase #: 1,0, color #: 10-24, and line style #: 1-4.

Line(X1,Y1,X2,Y2,0[,line#])

Erases a line (erase #: 1,0) from (X1,Y1) to (X2,Y2).

LinReg(a+bx) [Xlistname,Ylistname,freqlist,regequ]

Fits a linear regression model to Xlistname and Ylistname with frequency freqlist, and stores the regression equation to regequ.

LinReg(ax+b) [Xlistname,Ylistname,freqlist,regequ]

Fits a linear regression model to Xlistname and Ylistname with frequency freqlist, and stores the regression equation to regequ.

LinRegTInt [Xlistname,Ylistname,freqlist,confidence level, regequ]

Performs a linear regression and computes the t confidence interval for the slope coefficient b.

LinRegTTest [Xlistname,Ylistname,freqlist,alternative,regequ]

Performs a linear regression and a t‑test. alternative=L1 is <; alternative=0 is ƒ; alternative=1 is >.

@List(list)

Returns a list containing the differences between consecutive elements in list.

List4matr(listname1,...,listname n,matrixname)

Fills matrixname column by column with the elements from each specified listname.

ln(value)

Returns the natural logarithm of a real or complex number, expression, or list.

LnReg [Xlistname,Ylistname,freqlist,regequ]

Fits a logarithmic regression model to Xlistname and Ylistname with frequency freqlist, and stores the regression equation to regequ.

log(value)

Returns logarithm of a real or complex number, expression, or list.

logBASE(value, base)

Returns the logarithm of a specifed value determined from a specified base: logBASE(value, base).

Logistic [Xlistname,Ylistname,freqlist,regequ]

Fits a logistic regression model to Xlistname and Ylistname with frequency freqlist, and stores the regression equation to regequ.