Suppose you have surveyed 30 people and asked them whether they are white (W) or nonwhite (N), and how many traumas (serious accidents, rapes, or crimes) they have experienced in the past year. You also asked them to tell you whether they perceive themselves as being in the upper, middle, working, or lower class. Your survey resulted in the raw data presented in the table below:
a. What level of measurement is the variable race? Class?
b. Construct raw frequency tables for race and for class.

Race: W, white; N, nonwhite; Class: L, lower class; M, middle class; U, upper class; W, working class.

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