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AP Statistics
Unit 4 – Probability, Random Variables, and Probability Distributions
Topic 4.8
What is the standard deviation of the sum of two independent random variables equal to?
The difference of their standard deviations.
The sum of their standard deviations.
The product of their standard deviations.
The average of their standard deviations.
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AP Statistics - 4.8 Mean and Standard Deviation of Random Variables
Key terms
Independent Random Variables
Standard Deviation
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About Fiveable
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CCPA Privacy Policy
Resources
Cram Mode
AP Score Calculators
Study Guides
Practice Quizzes
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Crisis Text Line
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© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.
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