AP Stats Unit 3 REVIEW - Collecting Data

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Mathematics
•
11th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the importance of controlling variables in an experiment?
Back
Controlling variables ensures that the results of an experiment are due to the independent variable and not influenced by other factors, leading to valid conclusions.
2.
FLASHCARD QUESTION
Front
What is random sampling with replacement?
Back
A sampling method where each member of the population can be selected more than once, as the selected member is returned to the population before the next selection.
3.
FLASHCARD QUESTION
Front
Define random sampling.
Back
A sampling method where every member of the target population has an equal chance of being selected for the sample.
4.
FLASHCARD QUESTION
Front
What is a confounding variable?
Back
A confounding variable is an outside influence that changes the effect of a dependent and independent variable, potentially skewing the results of an experiment.
5.
FLASHCARD QUESTION
Front
What does it mean to generalize results from a sample?
Back
To generalize results means to apply findings from a sample to a larger population, assuming the sample accurately represents that population.
6.
FLASHCARD QUESTION
Front
What is the difference between a sample and a population?
Back
A population includes all members of a specified group, while a sample is a subset of the population selected for analysis.
7.
FLASHCARD QUESTION
Front
What is the purpose of using a large sample size in surveys?
Back
A large sample size increases the reliability of the results and reduces the margin of error, making the findings more representative of the population.
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