A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
elizbaker45
 3 years ago
could anyone explain chi squared tests?
elizbaker45
 3 years ago
could anyone explain chi squared tests?

This Question is Closed

griml
 3 years ago
Best ResponseYou've already chosen the best response.1Explain as in explain the equation or how it works?

griml
 3 years ago
Best ResponseYou've already chosen the best response.1\[\sum_{i=1}^{k}(O _{i}E _{i})^{2}/(E _{i})\] Where K is the number of categories. O sub i is the observed outcomes of i and E sub i is the expected number of outcomes. Do you have a software available to you such as StatCrunch?

griml
 3 years ago
Best ResponseYou've already chosen the best response.1That equation is your test statistic. It will give you your value to put into the table to determine your PValue.

elizbaker45
 3 years ago
Best ResponseYou've already chosen the best response.1no i'm just using excel

griml
 3 years ago
Best ResponseYou've already chosen the best response.1Since I don't know the exact commands for Excel, I'll explain that by hand. You take your observed value for each number/category (i), and subtract the expected value, which is calculated by your number of samples times the probability of i. (Observed value of 1  expected value of 1)^2/(expected value of 1) + (Observed value of 2  expected value of 2)^2/(expected value of 2) + etc.
Ask your own question
Ask a QuestionFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.