Question

1. Imagine that we want to see if a person’s income grows as they get older. We want to see if their current income is significantly higher than their income was 5 years ago. What statistical test would we need to run to answer this question? Can we answer it with this data set? If the answer is yes, tell me each mean, then complete the test and include a complete write up, including the test name, statistic, degrees of freedom, and probability. Write a 1-2 sentence synopsis of what your results mean.

2. Split the class into two groups – those who have a high school diploma and those who have a college degree. You hypothesize that those with a college degree have read more books in the past year than those with a high school diploma. Tell me the average number of books read for each group. Then, run an independent samples t-test to test your hypothesis. Include a complete write up, including the statistic value, degrees of freedom, and probability. Write a 1-2 sentence synopsis of what your results mean.

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Answer 1

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