7th Grade Math Flashcards: Draw Inferences From Random Samples

Study Draw Inferences From Random Samples in 7th Grade Math with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

Which sample is more likely to give a stable estimate: $n=20$ or $n=200$ ?

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ANSWER

$n=200$ . Larger samples reduce sampling variability and give more stable estimates.

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51 cards

What this deck covers

This deck focuses on Draw Inferences From Random Samples, giving you a quick way to review the definitions, rules, and examples that matter most for 7th Grade Math.

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 48Practice questions for this set

A school nurse wants to estimate the average amount of sleep students get per night. She randomly surveys 20 students four different times, getting these average results: 7.2 hours, 6.8 hours, 7.5 hours, and 6.9 hours. A teacher suggests the nurse should survey 100 students just once instead. Which approach is better for making inferences?

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