The Spearman correlation can be calculated for
a. monotonic data
b. not-monotonic data
c. either monotonic or not-monotonic data
d. only linear data
Is it A or C?
The Spearman correlation is a measure of the strength and direction of the monotonic relationship between two variables. Monotonicity refers to the consistent increase or decrease of one variable as the other variable varies.
Therefore, the Spearman correlation can be calculated for both monotonic data and not-monotonic data. So, the correct answer would be option C - either monotonic or not-monotonic data.