Coefficient of Skewness. The coefficient of skewness quantifies the skewness of a distribution. It is defined as

Most skewness values lie between 23 and 3. Negative values of skewness are associated with left-skewed distributions, whereas positive values are associated with right-skewed distributions. Values close to zero indicate distributions that are nearly symmetric. Use this information for Exercises 86–88.

Question 3.201

88. image Coefficient of Skewness for the Case Study Data. The median price change for the professional analysts is 9.60, the median for the dart throwers is 3.25, and the median for the DJIA is 7.00. Use this information, along with the information in Figure 21 on page 140 to answer the following.

  1. Calculate the coefficient of skewness for each of the Pros, the Darts, and the DJIA.
  2. Comment on the skewness of each distribution.