Math 4 - Stats Quiz Review

Which set of numbers could make this boxplot?

• 20 27 40 49 50 60 85 90 90 100

• 20 21 40 41 60 73 73 75 85 95

• 20 23 40 45 49 51 69 85 85 95

• 1 2 3 4 5 6 7 8 9 1,273

A sample was taken of the salaries of 20 employees of a large company.  The box plot shows the salaries (in thousands of dollars) for this year.
Based on the boxplot, the five-number summary is...

• 28, 39, 48, 60.5, 77
• 28, 41, 48, 58, 77
• 28, 39, 51, 58, 77
• 28, 41, 51, 60.5, 77

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

• Mean, Median, Mode, Range, and Total

• Minimum, Q1, Median, Q3, and Maximum

• Smallest, Q1, Q2, Q3, and Q4

• Minimum, Maximum, Range, Mean, and Median

What is the term for the median of the upper half of the data?

• Upper Quartile, Q3

• Lower Quartile, Q1

• Median

• Minimum

16 out of the 20 people who called into a radio station said that they enjoy the station's morning programming. What type of bias is demonstrated here?

• Voluntary Response Bias

• Nonresponse Bias

• Undercoverage Bias

Which is an example of a random sample?

• Polling the first 10 people who enter a room

• Asking a survey question to people who call in

• Drawing 10 names from a hat

Why should samples be randomly selected?

• for control

• to reduce bias

• so we don't get the same answers from everyone

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

• Sample

• Population

• Random Sample

• Bias

Leslie surveyed the 20 youngest students in the elementary school. What type of bias is this?

• Voluntary Response Bias

• Nonresponse Bias

• Undercoverage Bias

Volunteers for a politician's campaign called 100 randomly selected citizens to conduct a survey. Only 50 people agreed to answer the survey questions, and most of them were supporters of the candidate. This is an example of...

• Voluntary Response Bias

• Nonresponse Bias

• Undercoverage Bias