What kind of questions can you ask about those numbers? Well, you can look at the numbers and estimate their general properties as we already did. What do you get when you ask people to use a number to describe how happy they are? A bunch of numbers. Let’s continue with this imaginary thought experiment. We started Chapter two with some fake data on human happiness, remember? We imagined that we asked a bunch of people to tell us how happy they were, then we looked at the numbers they gave us. If you are looking for a big theme to think about while you take this course, the theme is: how do we ask and answer questions using data?įor every section in this book, you should be connecting your inner monologue to this question, and asking yourself: How does what I am learning about help me answer questions with data? Advance warning: we know it is easy to forget this stuff when we dive into the details, and we will try to throw you a rope to help you out along the way…remember, we’re trying to answer questions with data. The big reason is that we are interested in getting answers to questions using data. Let’s not forget the big reason why we learned about descriptive statistics. So, we talked about how to look at the data visually using plots and histograms, and we talked about how to summarize lots of numbers so we could determine their central tendencies (sameness) and variability (differentness). It was too much too look at and it didn’t make sense. Correlation does not equal causation -Every Statistics and Research Methods Instructor Ever
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