Other
MATH 221 Week 4 Discussion Post
- Course
- Institution
Both Discrete and Continuous Random Variables
[Show more]
Seller
Follow
ProfGoodlucK
Reviews received
Content preview
MATH 221 Week 4 Discussion PostBoth Discrete and Continuous Random Variables Discussion Post #3
Professor Ramanathan
A variable is a quantity whose value changes.
A discrete variable is a variable whose value is obtained by counting.
Examples: number of students present
number of red marbles in a jar
number of heads when flipping three coins
students’ grade level
A continuous variable is a variable whose value is obtained by measuring.
Examples: height of students in class
weight of students in class
time it takes to get to school
distance traveled between classes
A random variable is a variable whose value is a numerical outcome of a random phenomenon.
Examples:
▪ A random variable is denoted with a capital letter
▪ The probability distribution of a random variable X tells what the possible values of X are
and how probabilities are assigned to those values
▪ A random variable can be discrete or continuous
A discrete random variable X has a countable number of possible values.
Then the probability distribution of X is as follows:
X 2 3 4 5 6 7 8 9 10 11 12
P(X)
This study source was downloaded by 100000849840424 from CourseHero.com on 07-19-2022 13:11:19 GMT -05:00
https://www.coursehero.com/file/97865015/MATH-221-Week-4-Discussion-post-3-032721-1docx/
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ProfGoodlucK. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78252 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now