Normal Distribution
Flashcard
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
+2
Standards-aligned
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is Normal Distribution?
Back
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.
Tags
CCSS.HSS.MD.A.3
CCSS.HSS.MD.A.4
2.
FLASHCARD QUESTION
Front
What is the mean in a normal distribution?
Back
The average of all data points, which is the center of the distribution.
Tags
CCSS.6.SP.B.5D
CCSS.HSS.ID.A.2
3.
FLASHCARD QUESTION
Front
What is variance?
Back
A measure of how much values in a data set differ from the mean, calculated as the average of the squared differences from the mean.
4.
FLASHCARD QUESTION
Front
What is the standard deviation?
Back
The square root of the variance, representing the average distance of each data point from the mean.
5.
FLASHCARD QUESTION
Front
What does a Z-score represent?
Back
The number of standard deviations a data point is from the mean.
6.
FLASHCARD QUESTION
Front
What is the empirical rule (68-95-99.7 rule)?
Back
In a normal distribution, approximately 68% of data falls within 1 standard deviation, 95% within 2 standard deviations, and 99.7% within 3 standard deviations of the mean.
Tags
CCSS.HSS.ID.A.4
7.
FLASHCARD QUESTION
Front
How do you calculate the Z-score?
Back
Z = (X - μ) / σ, where X is the value, μ is the mean, and σ is the standard deviation.
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