A few days ago
college stats and standard deviations??
Something isn’t clicking today, so I must be making a silly error. Given a list of data values, the Ex (sum of x) is 71.5; which is correct. How do I find the sum of all values squared (Ex^2)? I am way off by simply squaring the 71.5! What did I do wrong?
Top 1 Answers
A few days ago
Favorite Answer
I don’t know this for sure, but check out this website’
www.richland.edu/james/
lecture/m113/variation.html
When you get there, just scroll down to sum of the squares.
There is a good formula and explanation for finding the “sum of the squares” (is that what you are looking for??)
This is the formula: (I’m using the capital E for the greek sum symbol)
SS(x) = Ex^2 – (Ex)^2 / n
0
- Academic Writing
- Accounting
- Anthropology
- Article
- Blog
- Business
- Career
- Case Study
- Critical Thinking
- Culture
- Dissertation
- Education
- Education Questions
- Essay Tips
- Essay Writing
- Finance
- Free Essay Samples
- Free Essay Templates
- Free Essay Topics
- Health
- History
- Human Resources
- Law
- Literature
- Management
- Marketing
- Nursing
- other
- Politics
- Problem Solving
- Psychology
- Report
- Research Paper
- Review Writing
- Social Issues
- Speech Writing
- Term Paper
- Thesis Writing
- Writing Styles