Psy 230 round up exercises - Locate a recent newspaper or magazine article that describes the results of a statistical study Include a full citation for

Psy 230 round up exercises - Locate a recent newspaper or...

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Locate a recent newspaper or magazine article that describes the results of a statistical study. Include a full citation for the source so your instructor can verify it. Respond to the following questions. 1.Identify the sample and the population, the variables of interest, and the sampling method that was used. Describe the advantages and disadvantages of having used this particular sampling method. 2.What is inferred from the results, i.e., what is the conclusion? What alternative explanations could there be for the results? 1. Summarize those scores in both a frequency distribution table with appropriate classes and frequencies shown. 2. Calculate the mean, median, variance, and standard deviation of the data. 3. Calculate the 25th percentile. 4.What is the z-score of the second highest score (second score counting down)? Would this be considered an unusual event? 1.Make up an original “real life” example (e.g., not card decks or dice) of how to use the multiplication rule to determine the probability of an outcome. Explain why the events in your example are either dependent or independent. 2.Make up an original “real life” example (e.g., not card decks or dice) of how to use the addition rule to determine the probability of an outcome. Explain why the events in yourexample are either mutually exclusive or not mutually exclusive.Lesson 4

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