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Statistics & Probability Flashcards: Using Two Way Tables For Probability

Study Using Two Way Tables For Probability in Statistics & Probability with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

What is the definition of a two-way frequency table?

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ANSWER

A table of counts for data classified by two categorical variables. Shows frequencies for combinations of two categorical variables.

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Statistics & Probability: Independence & Conditional Probability

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This deck focuses on Using Two Way Tables For Probability, giving you a quick way to review the definitions, rules, and examples that matter most for Statistics & Probability.

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Practice questions

1 of 37Practice questions for this set
A random sample of 150 students recorded whether they prefer to study in the morning or evening and whether they usually study alone or in a group. Using the two-way table, what is P(Morning∣Group)P(\text{Morning}\mid\text{Group})? Give your answer as a fraction. Two-way table (counts):
  • Group & Morning: 18
  • Group & Evening: 42
  • Alone & Morning: 45
  • Alone & Evening: 45
  • Row totals: Group = 60, Alone = 90
  • Column totals: Morning = 63, Evening = 87
  • Grand total: 150
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