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Session 7 Quiz

Test What You Learned!

8 questions about Session 7: When Data Tricks You. Get 6+ right to pass!

How it works:

Progress

1

What is a truncated y-axis?

  • An axis that goes to infinity
  • An axis that starts at a number other than zero, making differences look bigger
  • An axis without numbers
  • A broken axis
2

Why are small samples unreliable?

  • Small numbers are harder to count
  • One unusual response can dramatically change the results
  • Small samples cost less
  • They take too long
3

What is selection bias?

  • Choosing the best data
  • When the people you surveyed are not representative of the whole group
  • Selecting the right graph
  • Picking the correct answer
4

What is confirmation bias?

  • Confirming your survey results
  • Only noticing data that supports what you already believe
  • Asking for confirmation
  • A bias in confirmations
5

What questions should a data detective ask?

  • Is the graph colorful?
  • Who collected this, why, how many people, and is it representative?
  • Was it published recently?
  • Is it on the internet?
6

What is the difference between informing and persuading with data?

  • There is no difference
  • Informing shows the full picture; persuading selects only data that supports one viewpoint
  • Informing is boring; persuading is exciting
  • Only scientists inform; everyone else persuades
7

If an ad says '9 out of 10 doctors recommend...' what should you ask?

  • Nothing — it must be true
  • How many doctors were surveyed? Were they paid? What did the 10th doctor say?
  • Which doctors?
  • Is 9 a big number?
8

Can the same data be used to support opposite conclusions?

  • No, data only supports one conclusion
  • Yes, by selecting different parts of the data or using different graphs
  • Only if the data is wrong
  • Only scientists can do this