Consider the Oil Spill data and the variable "symptoms", a measurement of symptom severity that ranges from 0 (no symptoms) to 40 (most severe symptoms).
1) Create a histogram showing the distribution of symptom scores in this sample. Is this a skewed distribution? If so, is it skewed to the left or to the right?
2) Provide a five-number-summary of this distribution. Does the 1.5 x IQR rule identify any suspected outliers?