Z-Scores and Normal Distribution

Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a Z-score?
Back
A Z-score indicates how many standard deviations an element is from the mean of a distribution.
2.
FLASHCARD QUESTION
Front
What is the formula for finding Z-scores?
Back
3.
FLASHCARD QUESTION
Front
What does a positive Z-score indicate?
Back
A positive Z-score indicates that the value is above the mean.
4.
FLASHCARD QUESTION
Front
What does a negative Z-score indicate?
Back
A negative Z-score indicates that the value is below the mean.
5.
FLASHCARD QUESTION
Front
What is the mean in a normal distribution?
Back
The mean is the average of all data points in a normal distribution.
6.
FLASHCARD QUESTION
Front
What is the standard deviation in a normal distribution?
Back
The standard deviation measures the dispersion or spread of the data points around the mean.
7.
FLASHCARD QUESTION
Front
What percentage of data falls within one standard deviation of the mean in a normal distribution?
Back
Approximately 68% of the data falls within one standard deviation of the mean.
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