Athletes' salaries. Here is a small part of a data set that describes Major League Baseball players as of opening day of the 2011 season:
(a) What individuals does this data set describe?
(b) In addition to the player's name, how many variables does the data set contain? Which of these variables take numerical values? Which of the variables are not numerical variables?
(c) What do you think are the units in which each of the numerical variable salary is expressed? For example, what does it mean to give Josh Beckett's annual salary as 17,000? (Hint: The average annual salary of a Major League Baseball player on opening day, 2011, was $3,305,393.)