2.4 - Finding Standard Deviation

Flashcard
•
Mathematics
•
10th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula for calculating the sample standard deviation?
Back
Take the square root of the variance, which is calculated by dividing the sum of squared deviations from the mean by n-1.
2.
FLASHCARD QUESTION
Front
What do you do with the mean when calculating standard deviation?
Back
Subtract the mean from each number in the data set.
3.
FLASHCARD QUESTION
Front
What is the first step in finding the standard deviation by hand?
Back
Calculate the mean of the data set.
4.
FLASHCARD QUESTION
Front
What do you do after squaring all the deviations from the mean?
Back
Add all the squared deviations together.
5.
FLASHCARD QUESTION
Front
What is the purpose of squaring the deviations when calculating standard deviation?
Back
To eliminate negative values and give more weight to larger deviations.
6.
FLASHCARD QUESTION
Front
What does 'n' represent in the context of standard deviation?
Back
The number of observations in the sample.
7.
FLASHCARD QUESTION
Front
What does 'n-1' represent when calculating sample standard deviation?
Back
It is used as the denominator to provide an unbiased estimate of the population standard deviation.
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