Statistics Flashcards: Analyzing Decisions And Strategies With Probability

Study Analyzing Decisions And Strategies With Probability in Statistics with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

What is sensitivity in terms of conditional probability?

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ANSWER

$\text{sensitivity}=P(+\mid D)$ . Sensitivity is probability of positive test given disease.

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What this deck covers

This deck focuses on Analyzing Decisions And Strategies With Probability, giving you a quick way to review the definitions, rules, and examples that matter most for Statistics.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 31Practice questions for this set

A retailer is deciding how to handle an online fraud alert system. About

1\%

of orders are truly fraudulent. Option A (Aggressive): flags

95\%

of fraudulent orders, but also flags

10\%

of legitimate orders. Option B (Conservative): flags

75\%

of fraudulent orders, but flags only

2\%

of legitimate orders. Flagged orders are delayed for verification, which harms customer experience. The retailer's goal is to keep the fraction of all orders that get delayed as low as possible while still catching at least

70\%

of fraudulent orders. Which strategy is most reasonable given the probabilities?

Choose an answer

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