Mann-Kendall Trend Test — mann_kendall • er.helpers

Performs the Mann-Kendall trend test. This function is a wrapper around mk.test. See documentation there for more details about the calculation

mann_kendall(
  x,
  alternative = c("greater", "two.sided", "less"),
  continuity = TRUE
)

Arguments

x: a vector of class "numeric" or a time series object of class "ts"
alternative: the alternative hypothesis, defaults to two.sided
continuity: logical, indicates whether a continuity correction should be applied, defaults to TRUE.

Value

a tidy data frame with the test results

Examples

x <- runif(100) * 1:100
mann_kendall(x, alternative = "two.sided")
#> # A tibble: 1 × 9
#>    p_value     s  var_s   tau     z method           n alternative note 
#>      <dbl> <dbl>  <dbl> <dbl> <dbl> <chr>        <int> <chr>       <chr>
#> 1 2.76e-14  2556 112750 0.516  7.61 Mann-Kendall   100 two.sided   NA