Question

How to calculate the coefficient of kurtosis?

Answer 1

For coefficient of kurtosis, you can either use this formula:

or you can use excel formula .

Example: Suppose we have data 1, 2, 3, 4, 5.

	1	-2	4	16
	2	-1	1	1
	3	0	0	0
	4	1	1	1
	5	2	4	16
SUM	15	0	10	34

The sample mean is:

The sample variance is:

The coefficient of kurtosis is:

And using excel, the coefficient of kurtosis is: