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Session 2 Quiz

Test What You Learned!

8 questions about Session 2: What Is Typical? The Mean. Get 6+ right to pass!

How it works:

Progress

1

How do you calculate the mean?

  • Pick the biggest number
  • Add all values and divide by how many values there are
  • Find the middle number
  • Subtract the smallest from the largest
2

What is the mean of 10, 20, 30, 40, 50?

  • 30
  • 25
  • 50
  • 10
3

What is an outlier?

  • The most common value
  • A value far away from the rest of the data
  • The average
  • The middle number
4

When can the mean be misleading?

  • Never — the mean is always accurate
  • When the data has extreme outliers
  • Only in math class
  • When the numbers are small
5

What is the median?

  • The average of all values
  • The middle value when data is in order
  • The most common value
  • The range of the data
6

Which is better for comparing two groups?

  • Always use the biggest number
  • Calculate the mean for each group and compare
  • Just look at the graphs
  • Pick a random value from each
7

A company says 'average salary is $100,000.' What should you ask?

  • Nothing — averages are always honest
  • How many people, and is the median different from the mean?
  • What color is the office?
  • Is the company hiring?
8

What is the mean of 3, 3, 3, 3, 3?

  • 0
  • 3
  • 15
  • 1