The mission

We've all heard the stereotypes: firstborns are very responsible and bossy; the youngest is spoiled and carefree; and the middle child is a jealous introvert! It turns out prominent psychology researchers have reached out to your data science consultancy firm and have conducted several small empirical studies on how birth order affects personality. But they just got a hold of a dataset of over 40,000 online quiz entries from the Open-Source Psychometrics Project. They are skeptical because it was submitted online and they have never conducted a study of that magnitude, so it's uncharted territory. For these reasons, they would like a third party who is well versed in machine learning to approach the problem with fresh eyes. What they hope to learn is about any relation between the quiz answers and the birth order, and also to determine if there are any questions they could use in their empirical studies, or even if online quizzes are a reliable method to begin...