test_summarize_linear_contrasts function

Test for linear trend across ordered factor with contrasts

test_summarize_linear_contrasts(x, y)

Arguments

• x: vector
• y: ordered factor

Returns

a list with two components: p.value and method

Examples

library(dplyr)
my_test_args=crosstable_test_args()
my_test_args$test_summarize = test_summarize_linear_contrasts
iris %>%
  mutate(Petal.Width.qt = paste0("Q", ntile(Petal.Width, 5)) %>% ordered()) %>%
  crosstable(Petal.Length ~ Petal.Width.qt, test=TRUE, test_args = my_test_args)

Author(s)

Dan Chaltiel