(a) The proportion of all voters who will vote Democrat in the next election
(b) The proportion of voters in a Gallup Poll who say they will vote Democrat in the next election
(c) The mean score of the home team in all NFL games in 2005
(d) The proportion of Asian students among all students attending high school in the state of
California
(e) The mean difference score between a randomly selected class taught statistics by a new method
and another class taught by an old method
(f) The speed of a car
Answer: Statistics: b, e, f
Parameters: a, c, d