Final Exam ANA 500 Use gretl and the State Smoking dataset to answer the questions below. Upload a Word or PDF document that contains your answers. Upload your gretl script file in addition to your Word or PDF document. 1. Dataset: a) How many variables are in this dataset? b) How many observations are in this dataset? c) What are the elements/entities in this dataset? 2. Descriptive statistics: a) Calculate descriptive statistics for the variables \"consumption\" and \"cig_price\". b) What types of variables are \"consumption\" and \"cig_price\"? c) Provide a scatterplot between cigarette consumption and cigarette prices (do not include a fit line). Describe the relationship between the two variables shown in the scatterplot. d) Provide an estimated density plot for the variable \"consumption\". Is the variable skewed? If yes, in which direction