An article in Advertising Age discusses the need for corporate transparency of all transactions and hails the imperative "Get naked," which, it said, appeared on the cover of a recent issue of Wired. The article tried to compare the transparency policies of Microsoft, Google, Apple, and Wal-Mart. Suppose that four independent random samples of 20 accountants each rate the transparency of these four corporations on a scale of 0 to 100.
a. What are the degrees of freedom for Factor?
b. What are the degrees of freedom for Error?
c. What are the degrees of freedom for Total?