Skewed Distributions

Question 1

What happens to the mean, median and mode in a normal (Gaussian) distribution?

Answer 1

mean = median = mode

Question 2

What happens to the mean, median and mode in a positively skewed distribution?

Answer 2

mean > median > mode

Question 3

What happens to the mean, median and mode in a negatively skewed distribution?

Answer 3

mean < median < mode

Question 4

How can you easily remember the difference between positive and negatively skewed distributions?

Answer 4

Positive moves forward >

Negative moves backwards <