Stat 225 Student Topics Exam 2

# Stat 225 Student Topics Exam 2 - Stat 225 Topics for Exam 2...

This preview shows pages 1–2. Sign up to view the full content.

Stat 225 Topics for Exam 2 To study for Exam 2, practice the following skills will be helpful. This list is not exhaustive and is only meant as a guide to help you study. Random Variables ¾ Understand the difference between “Event” and “Random Variable” ¾ Know the difference between discrete and continuous random variables. ¾ Be able to write down the PMF table for a random variable described in a story problem (make sure that your probabilities add up to one!!) ¾ Graph PMFs in form of histograms. ¾ Compute probabilities and conditional probabilities using the “Fundamental Probability Formula” for a random variable with given PMF. Expected value, Variance ¾ Compute expected values of a random variable from the PMF table or from a Histogram ¾ Know the basis properties of expected value: ( ) ( ) E aX b aE X b + = + . ¾ Definition of variance and standard deviation and how to compute them. ¾ Basic properties of variance (both for dependent and independent random variables).

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern