Reference no: EM133930986

Assignment:

1. Explain the concept of a confounding vanable using at least two of the examples from the notes and discussion.

2. Are confounding vanables considered a threat to the validity of an experiment or study? Why or why not?

3. What is meant by the statement researchers/study design will attempt to account for these confounding variables"?

4. Also you MUST brainstorm any additional possible confounding variables for at least 3 or 4 examples from the notes as well as possible Confounding Variables you feel could be on a list of Common Confounding Variables. If you're having trouble coming up with additional plausible confounding variables just take a guess as if it were a type of free word association exercise in relation to the words you already see on the list of Common Confounding Vanables. Then look at your guesses to see if you can incorporate any of them into the examples. For the list of confounding variables they can be specific or more broad-based categories. However for the examples from the notes you must come up with at least 3 or 4 specific possible Confounding Variables and how they could affect the scenano.

5. (Optional) You can also address the questions regarding the eating broccoli example:

What would be the primary purpose or goal of conducting studies such as this?

What would be meant by the following statements: If this were the early 2000s the headline result might have read 'spinach eaters have longer life expectancy. And today it may have read kale eating habits shows longer life expectancy or perhaps quinoa or maybe another specific food you could take a guess at? And why?