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You are interested in testing whether students who complete a take-home exam early in the day (i.e., before noon) get higher test scores than students who wait until the last hour. You gather the data, compare test scores, and get a p-value of 0.04 (with on-average higher scores for students who take the exam earlier). What can you conclude? Select all that apply. 

When creating a visual in R, a “facet wrap”:

Which type of visual is useful for comparing the numerical distribution of a variable across different categories?

What is the purpose of creating a visual? What are the tradeoffs involved in creating a visualization and what is the ultimate purpose? What are some ideal properties of a good visual? Be as specific as possible.

1 gallon is how many quarts?

1 teaspoon (tsp) = how many milliliters (mL)?

What is nearly always paired in a visualization?

Explain the purpose of this code. Be as specific as possible:

In the lecture, Andrew talked about how he reshaped the direct marketing activities on Ensure to increase the ROI (return on investment) by +51%. What enabled this strong performance?

[1] provides essential amino acids that dogs and cats require. [2] provide essential fatty acids that dogs and cats require. [3] are not essential but are also an important part in balancing out the other macronutrients in the diet.