The table below shows the stem and leaf display for a student's time taken for him to wake up each morning every day for 3 weeks. (data are in minutes) 9 2 2 3 5 2 W 2 6 Key: 2 4 means 24 a. What percentage of the time are under 20 minutes? (3 marks) b. What is the mode of the data? (2 marks) QUESTION 5 The English statistician Karl Pearson (1857-1936) introduced a formula for the (4 marks) skewness of a distribution. Calculate the coefficient of skewness the distribution shown. Describe the shape of the distribution. x = 32, s = 5.1, median = 25