Stats Definitions and Methods of Sampling Review

Flashcard
•
Mathematics
•
9th - 10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a sample?
Back
A sample is a small portion of the population used to gather data from.
2.
FLASHCARD QUESTION
Front
What is random sampling?
Back
Random sampling is a method where every individual in the population has an equal chance of being selected.
3.
FLASHCARD QUESTION
Front
Identify the population and sample: 45,000 people made credit card purchases, 1,000 surveys mailed, 137 returned.
Back
Population: 45,000 people who made credit card purchases. Sample: 137 returned surveys.
4.
FLASHCARD QUESTION
Front
Why do we randomly select our samples?
Back
To reduce bias.
5.
FLASHCARD QUESTION
Front
What is the mode in a data set?
Back
The mode is the number that occurs most often in a data set.
6.
FLASHCARD QUESTION
Front
What is systematic sampling?
Back
Systematic sampling is a method where you select every nth individual from a list of the population.
7.
FLASHCARD QUESTION
Front
What is convenience sampling?
Back
Convenience sampling is a method where samples are taken from a group that is easily accessible.
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