To perform Spearman correlation testing in R, you can use the cor() function with the method set to “spearman”. This method evaluates the monotonic relationship between two variables. Here’s an example:
# Example data
x <- c(1, 2, 3, 4, 5)
y <- c(5, 4, 3, 2, 1)
# Spearman correlation
correlation <- cor(x, y, method = "spearman")
print(correlation)
This will output the Spearman correlation coefficient, indicating the strength and direction of the relationship. To perform hypothesis testing, you can use cor.test():
cor.test(x, y, method = "spearman")
This returns a test statistic and p-value.
