Discrete Random Variables

Flashcard
•
Mathematics
•
9th - 12th Grade
•
Easy
+1
Standards-aligned
DIANA CHRISTINE MIRALLES
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a discrete random variable?
Back
A discrete random variable is a type of variable that can take on a countable number of distinct values, often representing counts or categories.
2.
FLASHCARD QUESTION
Front
What is a probability distribution?
Back
A probability distribution is a mathematical function that provides the probabilities of occurrence of different possible outcomes in an experiment.
Tags
CCSS.HSS.MD.A.3
CCSS.HSS.MD.A.4
3.
FLASHCARD QUESTION
Front
What are the conditions for a valid probability distribution?
Back
1. All probabilities must be between 0 and 1. 2. The sum of all probabilities must equal 1.
Tags
CCSS.7.SP.C.7B
4.
FLASHCARD QUESTION
Front
What does it mean if the sum of p(x) does not equal 1?
Back
If the sum of p(x) does not equal 1, then the distribution is not a valid probability distribution.
5.
FLASHCARD QUESTION
Front
How do you find the value of k in a probability distribution?
Back
To find the value of k, set up the equation where the sum of all probabilities equals 1 and solve for k.
6.
FLASHCARD QUESTION
Front
What is the mean of a discrete random variable?
Back
The mean (expected value) of a discrete random variable is calculated by multiplying each possible value by its probability and summing the results.
Tags
CCSS.HSS.MD.A.2
7.
FLASHCARD QUESTION
Front
How do you calculate the standard deviation of a discrete random variable?
Back
Standard deviation is calculated by taking the square root of the variance, which is the average of the squared differences from the mean.
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