The members of Congress have these religious affiliations: Catholic (156), Jewish (39), Protestant (304), Mormon (15), other (15). There were six members of Congress who did not specify a religious affiliation, and the data are current at the time of this writing.
a. What is the level of measurement of the religious affiliations (Catholic, Jewish, and so on)?
b. What is the level of measurement of the frequency counts (156, 39, and so on)?
c. Are the frequency counts data that are discrete or continuous?
d. What proportion of the members of Congress are Protestant?
e. Given that the data describe the population of members of Congress, is the result from part (c) a statistic or a parameter?