Leta, f3, and y be mappings from Z to Z defined by a(n) = 2n, f3(n) = n + 1, and y(n) = nlfor each n E Z.(a) Which of the three mappings are onto?(b) Which of the three mappings are one-to-one?(c) Determine a(N), f3(N), and y(N).

STAT 206: Chapter 2 (Organizing and Visualizing Variables) Methods to Organize and Visualize Variables For Categorical Variables: Summary Table; contingency table (2.1) Bar chart, pie chart, Pareto chart, side-by-side bar chart (2.2) For Numerical Variables (Array), Ordered Array, frequency distribution, relative frequency distribution, percentage...