An individual surveys 15 people under the age of 40 and asks for their current salary. The resulting histogram is shown below.
How many of those surveyed earn less than or equal to $50,000 a year?
Company B recorded a transaction with a debit of $10,000 to deferred revenue and a credit of $10,000 to revenue. Which of the following situations BEST describes the transaction that would lead to this journal entry?
On the way to purchase a shirt, a consumer realizes that the shirt is on sale for 20 percent off its original price. What is an outcome of this scenario?

Which of the following situations requires dummy variables to be used in the regression model?