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Homework 2

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Homework 2
15 points total; due in the Dropbox by Sunday
Save the file as: Lastname_HW2
Be sure to review the chapter 5 Powerpoint notes on sampling
Remember the basic principle of probability sampling: All elements (e.g., persons, households)
in the population have some opportunity of being included in the sample, and the
mathematical probability that any one of them will be selected can be calculated its
definable. This does not mean that everyone has an equal chance of being on the sample; it just
means that everyone has a chance of being in the sample and this chance can be calculated
beforehand. In non-probability sampling, you have NO idea beforehand what the chance of
someone being in your sample is. For example, you are walking around and asking people on
the street - you can’t calculate beforehand what their chances of being in your sample are.
Probability Sampling
1. Explain exactly how you would choose a simple random sample of ten students from our
Research Methods class. (5 points)
2. If there are 60% females and 40% males in our class, explain in detail how you would pick a
probability sample that would represent the proportion of males and females in the class
(sample size of ten again). What is this type of sampling called? (5 points)

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Homework 2 15 points total; due in the Dropbox by Sunday Save the file as: Lastname_HW2 Be sure to review the chapter 5 Powerpoint notes on sampling Remember the basic principle of probability sampling: All elements (e.g., persons, households) in the population have some opportunity of being included in the sample, and the mathematical probability that any one of them will be selected can be calculated – it’s definable. This does not mean that everyone has an equal chance of being on the sample; it just means that everyone has a chance of being in the sample and this chance can be calculat ...
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