# HLT362V Random Sampling

## HLT362V Random Sampling

HLT362V Random Sampling

HLT 362V Week 1 Discussions Questions

How could graphics and/or statistics be used to misrepresent data? Where have you seen this done?

What are the characteristics of a population for which a mean/median/mode would be appropriate?

HLT 362V Week 2 Discussions Questions

Explain the importance of random sampling. What problems/limitations could prevent a truly random sampling and how can they be prevented?

How large would your population have to be for a sample to be appropriate (i.e., rather than measuring the whole population)?

HLT362V Random Sampling

HLT 362V Week 3 Discussions Questions

Suppose you hear an “old-timer” say, “Why, in my day, kids were much more respectful and didn’t cause as much trouble as they do nowadays!” Formulate a hypothesis related to this statement that you could test. How would you test it?

Researchers routinely choose an α-level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower α -level (e.g. 0.01)? What are some situations in which you might accept a higher level (e.g. 0.1)?

Explain when a z-test would be appropriate over a t-test.

Researchers routinely choose an alpha level of 0.05 for testing their hypotheses. What are some experiments for which you might want a lower alpha level (e.g., 0.01)? What are some situations in which you might accept a higher level (e.g., 0.1)?

HLT 362V Week 4 Discussions Questions

How would you explain the analysis of variance, assuming that your audience has not had a statistics class before?

What is an interaction? Describe an example; what are the variables within your population (work, social, academic, etc.) for which you might expect interactions?

HLT 362V Week 5 Discussions Questions

Now that you are familiar with the basic concepts of statistics, what are some examples of when you have seen or heard statistics used inappropriately?

Describe the error in the conclusion.  Given: There is a linear correlation between the number of cigarettes smoked and the pulse rate.  As the number of cigarettes increases the pulse rate increases.  Conclusion:  Cigarettes cause the pulse rate to increase.

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