The file P02_03.xlsx contains data from a survey of 399 people regarding an environmental policy.

a.Indicate the data type for each variable in this data set;

b.Create a column chart of counts of the "Opinion" variable;

c.Create a dummy variable of the "Age" variable;

d.Find the mean, median, minimum, maximum, standard deviation, 1st quartile, and 3rd quartile of the "Salary" variable;

e.Create a histogram of the "Salary" variable (hint: you need to create bins first). How would you characterize the salary distribution for these people?