Regents Algebra 2 Statistics
Flashcard
•
Mathematics
•
11th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the margin of error in statistics?
Back
The margin of error is a measure of the uncertainty in a survey's results, indicating the range within which the true value is expected to fall.
2.
FLASHCARD QUESTION
Front
How do you calculate the margin of error for a proportion?
Back
Margin of error = Z * sqrt[(p(1-p)/n)], where Z is the Z-score for the desired confidence level, p is the sample proportion, and n is the sample size.
3.
FLASHCARD QUESTION
Front
What does a 95% confidence level mean?
Back
A 95% confidence level means that if the same survey were conducted multiple times, 95% of the calculated margins of error would contain the true population parameter.
4.
FLASHCARD QUESTION
Front
What is a normal distribution?
Back
A normal distribution is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.
5.
FLASHCARD QUESTION
Front
What is the significance of the mean in a data set?
Back
The mean is the average of a data set, calculated by adding all values and dividing by the number of values, representing the central tendency.
6.
FLASHCARD QUESTION
Front
What is standard deviation?
Back
Standard deviation is a measure of the amount of variation or dispersion in a set of values, indicating how much individual data points differ from the mean.
7.
FLASHCARD QUESTION
Front
What is the difference between observational studies and experiments?
Back
Observational studies observe subjects without intervention, while experiments involve manipulation of variables to determine cause-and-effect relationships.
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