Which of the following distributions is positively skewed?
I. Normal distribution
II. Uniform distribution
III. Lognormal distribution
IV. Exponential distribution
A) I only
B) II only
C) III only
D) IV only
E) Only III and IV

Question

Quizplus · Accepted Answer

A normal distribution is symmetric and has no skew, so it is not positively skewed. A uniform distribution also has no skew, as all values have equal probability. A lognormal distribution and an exponential distribution are both positively skewed, with longer tails extending to the right. Therefore, the answer is only III and IV.

Which of the Following Distributions Is Positively Skewed