Cents-ational Statistics

                                    Non-cents =     A. value of some people's thinking
                                                            B. what you get back when you ante up for a stat experiment
                                                            C. worth less than a plug nickel
                                                            D. poll results the day after the election

                                    Common Cents =  A. the cost of courses in the core
                                                                 B. European Common Market's basic unit of currency
                                                                 C. worth less than a plugged nickel
                                                                 D.

                                    Centsitivity = A. the effect of an outlier on the mean
                                                         B. a missing trait of other people, never yourself
                                                         C. mutually exclusive with spaced out
                                                         D.

                                    Horse Cents =  A. Mr. Ed's allowance
                                                            B. smells from a stall
                                                            C. absolutely not worth a plugged nickel
                                                            D.

"Not worth a plugged nickel" as an Americanism meaning "worthless" first appeared in print about 1912,
 although we can assume "plugged nickel", along with the similar "plugged quarter" and "plugged peso," were in common usage long before they made it into print. To "plug" a coin  means to remove its center, usually because the coin is made of a precious metal such as gold or silver, and to replace the missing part with a cheaper metal "plug." This sort of larcenous messing with currency has been popular since coins first appeared millennia ago, and Americans were plugging French, English and other nations' coins back in the days before we had our own to plug. A plugged nickel, while it may be accepted at face value by an inattentive shopkeeper, is, of course, fundamentally worthless. http://www.word-detective.com/061300.html