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Session 3 Quiz

Test What You Learned!

8 questions about Session 3: Experimental vs. Theoretical Probability. Get 6+ right to pass!

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Progress

1

What is theoretical probability?

  • Probability from experiments
  • Probability calculated from math before doing any experiment
  • A guess about what will happen
  • The actual results of a trial
2

What is experimental probability?

  • Probability from math formulas
  • Probability calculated from actual experiment results
  • The probability that an experiment will work
  • A theoretical prediction
3

What does the law of large numbers say?

  • Large numbers are always better
  • More trials bring experimental probability closer to theoretical probability
  • Large samples are too expensive
  • Numbers get larger over time
4

Why might 10 coin flips give 8 heads?

  • The coin is unfair
  • Random variation is high with small samples — 8/10 is unusual but possible
  • Someone cheated
  • Heads is more likely
5

How many trials do you need for reliable results?

  • Exactly 10
  • More is generally better; there is no magic number but 50-100 is often reasonable
  • Just 3
  • Exactly 1,000
6

What is a small sample illusion?

  • A magic trick with small objects
  • A dramatic pattern in small data that would disappear with more data
  • A type of graph
  • An optical illusion
7

A restaurant has 3 reviews averaging 5 stars. Another has 500 reviews averaging 4.3 stars. Which rating is more reliable?

  • The 5-star restaurant
  • The 4.3-star restaurant with 500 reviews
  • They are equally reliable
  • Neither is reliable
8

Why do experimental results rarely match theoretical probability exactly?

  • Because math is wrong
  • Because randomness causes variation in every experiment
  • Because experiments are always flawed
  • They should always match