def cohens_d_multiple(xbar1, xbar2, ms_with):
	"""
	Get the Cohen's-d value for a multiple comparison test.

	Parameters
	----------
	> `xbar1`: the mean of the one of the samples in the test.
	> `xbar2`: the mean of another of the samples in the test.
	> `ms_with`: the mean-squared variability of the samples

	Returns
	-------
	The Cohen's-d value for both the samples in the multiple comparison test.
	"""

	return (xbar1 - xbar2) / (ms_with ** 0.5)