A few days ago
Make up frequency distributions of four scores between 10 & 100 that have the given mean and std. deviation???
A) M=80, sigma < 3
B) M=80, sigma > 20
C) M=80, sigma = 10
Please help, be clear and detailed, thanks in advance
Top 1 Answers
A few days ago
Favorite Answer
A)
{78, 79, 81, 82}
mean = 80
standard deviation = 1.825742
B)
{60,61,99,100}
mean = 80
std dev = 22.52406
C)
variance = (std dev)^2
variance = 1/3 * [(x-80)^2 + (y-80)^2 + (z-80)^2 + (w-80)^2]
100 = 1/3 * [(x-80)^2 + (y-80)^2 + (z-80)^2 + (w-80)^2]
300 = [(x-80)^2 + (y-80)^2 + (z-80)^2 + (w-80)^2]
300 = x² + y² + z² + w² – 160 * (x + y + z + w) + 25600
300 = x² + y² + z² + w² – 160 * (120) + 25600
300 = x² + y² + z² + w² – 25600
25900 = x² + y² + z² + w²
work this out, i’d do some more with it right now but I’m at work and should get back to that.
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