theil function

Perform the Theil nonparametric estimation and confidence interval for a slope parameter.

theil(x, y, conf = 0.9)

Arguments

• x: A vector of values of the explanatory variable.
• y: A vector of values of the response variable.
• conf: Level of confidence interval.

Returns

A list with letters and numbers.

• est - An estimate, the median of pairwise slopes.
• ci - A vector of confidence interval endpoints.

Examples

a<-0:19;b<-a^2.5
theil(a,b)