L50A2 Population and Sampling HW

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•
Mathematics
•
6th - 8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is an observational study?
Back
An observational study is a type of research where the researcher observes and records behavior or outcomes without manipulating any variables. The subjects are not influenced by the researcher.
2.
FLASHCARD QUESTION
Front
What is an experiment?
Back
An experiment is a research method where the researcher manipulates one or more variables to determine their effect on another variable, allowing for cause-and-effect conclusions.
3.
FLASHCARD QUESTION
Front
What is a sample in research?
Back
A sample is a subset of a population selected for observation and analysis, used to make inferences about the larger group.
4.
FLASHCARD QUESTION
Front
What is the difference between a sample and a population?
Back
A population includes all members of a defined group, while a sample is a smaller group selected from that population for study.
5.
FLASHCARD QUESTION
Front
What does it mean for a study to be randomized?
Back
Randomization means that participants are assigned to different groups in a study by chance, reducing bias and ensuring that each group is similar.
6.
FLASHCARD QUESTION
Front
What is the purpose of a control group in an experiment?
Back
A control group is used as a baseline to compare against the experimental group, helping to isolate the effect of the independent variable.
7.
FLASHCARD QUESTION
Front
What is a variable in research?
Back
A variable is any factor, trait, or condition that can exist in differing amounts or types and can affect the outcome of a study.
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