
8.02 Data Analysis

Flashcard
•
Mathematics
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a population in data analysis?
Back
The entire group of individuals or instances about whom we hope to learn, e.g., all shoppers in a mall.
2.
FLASHCARD QUESTION
Front
What is a sample in data analysis?
Back
A subset of the population selected for observation and analysis, e.g., the shoppers who were asked their preferences.
3.
FLASHCARD QUESTION
Front
What does it mean for a study to be biased?
Back
A study is biased if it systematically favors certain outcomes over others, leading to inaccurate conclusions.
4.
FLASHCARD QUESTION
Front
What does it mean for a study to be unbiased?
Back
A study is unbiased if it fairly represents the population, allowing for accurate conclusions.
5.
FLASHCARD QUESTION
Front
What is random sampling?
Back
A sampling method where each member of the population has an equal chance of being selected.
6.
FLASHCARD QUESTION
Front
What is convenience sampling?
Back
A sampling method that involves selecting individuals who are easiest to reach, which may lead to bias.
7.
FLASHCARD QUESTION
Front
What is stratified sampling?
Back
A sampling method that involves dividing the population into subgroups and randomly selecting from each subgroup.
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