Samples, populations, and Mean

Flashcard
•
Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a sample in statistics?
Back
A sample is a subset of individuals selected from a larger population, used to estimate characteristics of the whole population.
2.
FLASHCARD QUESTION
Front
What is a population in statistics?
Back
A population is the entire group of individuals or instances about whom we hope to learn.
3.
FLASHCARD QUESTION
Front
What is the mean?
Back
The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.
4.
FLASHCARD QUESTION
Front
How do you calculate the mean of a data set?
Back
To calculate the mean, sum all the values in the data set and divide by the total number of values.
5.
FLASHCARD QUESTION
Front
What is a biased sample?
Back
A biased sample is one that does not accurately represent the population, leading to skewed results.
6.
FLASHCARD QUESTION
Front
What is an unbiased sample?
Back
An unbiased sample is one that accurately reflects the characteristics of the population, allowing for valid conclusions.
7.
FLASHCARD QUESTION
Front
Why is it important to have a representative sample?
Back
A representative sample ensures that the results of a study can be generalized to the larger population.
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