Same thing could be said about location and closeness. I suppose you can answer it with a simple statement of ‘trees near X is taller than Y’ but it’s misleading because with the research question you implicitly assume that the location has to do with the height, and leaving species out you are not actually testing fairly if same types of tree grows taller and the height may just be a different choice of species. I get that maybe for simplicity of newly getting into statistics this may be a bit too complicated but to evaluate the question properly you absolutely need to consider species if that’s available in the data.
Whereas, if both species and type of location were listed and there were a specific species growing in both areas, the average height of that species could be compared between the two locations, and this would in turn solidify the hypothesis.Ĭompletely agree with this. For example, one would not be able to conclusively state that trees happen to grow larger in one area or the other if the same species was not growing in both. None of the above? Find out where to ask other questions here!įor the Validity Quiz question asking which variables would be relevant for “You want to know if trees near highways are taller than trees in cities,” would the species not also be relevant in this case? Since the species of tree would certainly affect the height and could provide more insight. Have a question about your account or billing? Reach out to our customer support team! Looking for motivation to keep learning? Join our wider discussions in # communityįound a bug? Report it online, or post in #community:Codecademy-Bug-Reporting If you are wanting feedback or inspiration for a project, check out # project. Need broader help or resources? Head to # get-help and # community:tips-and-resources. You can also find further discussion and get answers to your questions over in # get-help.Īgree with a comment or answer? Like ( ) to up-vote the contribution! Help a fellow learner on their journey.Īsk or answer a question about this exercise by clicking reply ( ) below! If you’ve had an “aha” moment about the concepts, formatting, syntax, or anything else with this exercise, consider sharing those insights! Teaching others and answering their questions is one of the best ways to learn and stay sharp. Ask or answer a question by clicking reply ( ) below. There are currently no frequently asked questions associated with this exercise – that’s where you come in! You can contribute to this section by offering your own questions, answers, or clarifications on this exercise. This exercise can be found in the following Codecademy content: FAQs on the exercise Validity This community-built FAQ covers the “Validity” exercise from the lesson “Data Types and Quality”.
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