Probability sampling techniques enable us to make relatively few observations and then generalize from those observations to a much wider population. For example, if a researcher is interested in what proportion of high school students have used marijuana, collecting data from a _____ of a few thousand students will serve just as well as trying to study every high school student in the country.

Question

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A. This is an incorrect answer because purpose of the probability sampling techniques is to enable us to make select a relatively few observations and then generalize from those observations to a much wider population. For example, if a researcher is interested in what proportion of high school students have used marijuana, collecting data from a probability sample of a few thousand students will serve just as well as trying to study every high school student in the country.
B. This is an incorrect answer because purpose of the probability sampling techniques is to enable us to make select a relatively few observations and then generalize from those observations to a much wider population. For example, if a researcher is interested in what proportion of high school students have used marijuana, collecting data from a probability sample of a few thousand students will serve just as well as trying to study every high school student in the country.
C. The correct answer is "C" because purpose of the probability sampling techniques is to enable us to make select a relatively few observations and then generalize from those observations to a much wider population. For example, if a researcher is interested in what proportion of high school students have used marijuana, collecting data from a probability sample of a few thousand students will serve just as well as trying to study every high school student in the country.
D. This is an incorrect answer because purpose of the probability sampling techniques is to enable us to make select a relatively few observations and then generalize from those observations to a much wider population. For example, if a researcher is interested in what proportion of high school students have used marijuana, collecting data from a probability sample of a few thousand students will serve just as well as trying to study every high school student in the country

Probability Sampling Techniques Enable Us to Make Relatively Few Observations