Math Statistics

A school concert committee conducts a survey to find what type of music students would like to hear at a school concert.  Which method is least likely to result in biased sample?

• Call 30% of the senior class directory
• Interview every 30th student as they walk into school
• Ask every 10th person as they leave a school band concert.
• Set up a website for the art students to list their two favorite genera of music.

David hosts a podcast and he is curious how much his listeners like his show. He decides to start with an online poll. He asks his listeners to visit his website and participate in the poll.The poll shows that 89 percent of the 200 respondents "love" his show. What is the most concerning source of bias in this scenario?

• Response Bias
• Undercoverage
• Voluntary Response Bias
• Nonresponse Bias

_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

• Sample

• Population

• Random Sample

• Quartile

_______ is a part of a group being surveyed.

• Sample
• Population
• Random Sample
• Quartile

_______ is the entire group of objects or individuals considered for a survey.

• Sample
• Population
• Random Sample
• Quartile

The manager of a book store surveys people who buy mystery novels to see if the store should expand its hours.  What is the population?

• People who visit the bookstore.
• People who buy mystery novels.
• Residents of the town
• People who like to read.

What is the interquartile range (IQR)?

• 4
• 64
• 60
• 8

Which car club has the higher median?

• Cruisers
• Car Hops

4. Which of the following lists all parts of the five number summary?

• Mean, Median, Mode, Range, and Total
• Minimum, Quartile 1, Median, Quartile 3, and Maximum 
• Smallest, Q1, Q2, Q3, and Q4
• Minimum, Maximum, Range, Mean, and Median

33, 25, 42, 25, 31, 37, 46, 29, 38
What is the third quartile (UQ) of the data?

• 37
• 38
• 40
• 46