Finding z-scores
Flashcard
•
Mathematics
•
11th - 12th Grade
•
Practice Problem
•
Hard
Standards-aligned
Wayground Content
FREE Resource
Student preview
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
How do you calculate a z-score?
Back
Z-score = (X - μ) / σ, where X is the value, μ is the mean, and σ is the standard deviation.
3.
FLASHCARD QUESTION
Front
What does a negative z-score indicate?
Back
A negative z-score indicates that the value is below the mean.
4.
FLASHCARD QUESTION
Front
What does a positive z-score indicate?
Back
A positive z-score indicates that the value is above the mean.
5.
FLASHCARD QUESTION
Front
If the mean weight of wallabies is 9lbs and the standard deviation is 1.5lbs, what weight corresponds to a z-score of -2?
Back
6lbs.
Tags
CCSS.HSS.ID.A.4
6.
FLASHCARD QUESTION
Front
If a student scores 31 on the ACT with a mean of 21 and standard deviation of 5, what is the z-score?
Back
2.00.
7.
FLASHCARD QUESTION
Front
What is the z-score for a home priced at $193,000 if the mean is $200,000 and the standard deviation is $10,000?
Back
-0.70.
Tags
CCSS.HSS.ID.A.4
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