The statistics professor has kept attendance records and recorded the number of absent students per class. The recorded data is displayed in the following bar chart with the frequency of each number of absent students shown above the bars. 
How many statistics classes had three or more students absent?
Definitions:
Interview
A formal meeting where one or more persons question, consult, or evaluate another person.
Overconfident
The state of being excessively confident without appropriate justification or evidence.
Résumé
A document used by individuals to present their background, skills, and accomplishments, primarily for securing employment.
Contact Information
Details that allow for communication with a person or organization, such as phone number, email address, or physical address.
Q20: A telemarketer knows that, on average, he
Q30: Which of the following relationships can be
Q32: The expected value of a random variable
Q35: Nominal and interval scales are used for
Q46: Warranty expense would be included in the
Q49: The empirical rule is only applicable for
Q67: A proprietor may have to pay self-employment
Q108: For qualitative data, a frequency distribution groups
Q134: Amounts owed for products or services purchased
Q156: Following is a list of account balances