What is a controlled experiment?

Statistical Analysis Flashcard

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•
Mathematics
•
11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A controlled experiment is a scientific test where one variable is changed while all others are kept constant to determine the effect of that variable.
2.
FLASHCARD QUESTION
Front
What is an observational study?
Back
An observational study is a research method where the researcher observes and records behavior without manipulating any variables.
3.
FLASHCARD QUESTION
Front
What percentage of Americans have type O blood according to the study?
Back
45% of Americans have type O blood.
4.
FLASHCARD QUESTION
Front
What is the best method for gathering a sample in a survey?
Back
The best method is to survey a random sample of individuals to ensure unbiased results.
5.
FLASHCARD QUESTION
Front
What is a sample survey?
Back
A sample survey is a study that collects data from a subset of a population to infer conclusions about the entire population.
6.
FLASHCARD QUESTION
Front
What is the margin of error in statistics?
Back
The margin of error is a measure of the uncertainty in survey results, indicating how much the results may differ from the true population value.
7.
FLASHCARD QUESTION
Front
What is the purpose of random sampling?
Back
Random sampling aims to select individuals from a population in such a way that every individual has an equal chance of being chosen, reducing bias.
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