Normal distribution
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
+1
Standards-aligned
Wayground Content
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15 questions
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1.
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.
2.
FLASHCARD QUESTION
Front
What shape is a normal distribution curve?
Back
Bell curve.
Tags
CCSS.6.SP.A.3
3.
FLASHCARD QUESTION
Front
What is the total area under the normal distribution curve?
Back
1.
4.
FLASHCARD QUESTION
Front
According to the empirical rule, what percentage of data falls within 1 standard deviation of the mean?
Back
68%.
Tags
CCSS.HSS.ID.A.4
5.
FLASHCARD QUESTION
Front
According to the empirical rule, what percentage of data falls within 2 standard deviations of the mean?
Back
95%.
Tags
CCSS.HSS.ID.A.4
6.
FLASHCARD QUESTION
Front
According to the empirical rule, what percentage of data falls within 3 standard deviations of the mean?
Back
99.7%.
Tags
CCSS.HSS.ID.A.4
7.
FLASHCARD QUESTION
Front
What is the z-score formula?
Back
z = (X - μ) / σ, where X is the value, μ is the mean, and σ is the standard deviation.
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