Normal Distributions Review

Flashcard
•
Mathematics
•
12th Grade
•
Hard
Standards-aligned
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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. It is calculated using the formula Z = (X - μ) / σ, where X is the value, μ is the mean, and σ is the standard deviation.
2.
FLASHCARD QUESTION
Front
What does it mean to be at the 55th percentile?
Back
Being at the 55th percentile means that 55% of the data points are equal to or below your score.
Tags
CCSS.6.SP.A.2
3.
FLASHCARD QUESTION
Front
How do you calculate a score from a Z-score?
Back
To find the score (X) from a Z-score, use the formula X = μ + Z * σ, where μ is the mean and σ is the standard deviation.
Tags
CCSS.HSS.ID.A.4
4.
FLASHCARD QUESTION
Front
What is the mean and standard deviation of a standard normal distribution?
Back
In a standard normal distribution, the mean is 0 and the standard deviation is 1.
5.
FLASHCARD QUESTION
Front
What is the shape of a normal distribution?
Back
A normal distribution is bell-shaped and symmetric about the mean.
6.
FLASHCARD QUESTION
Front
What does it mean if a distribution is unimodal?
Back
A unimodal distribution has one clear peak or mode, indicating the most frequent value.
7.
FLASHCARD QUESTION
Front
What is the significance of the 75th percentile?
Back
The 75th percentile indicates that 75% of the data points fall below this value.
Tags
CCSS.6.SP.B.5C
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