A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
how would you calculate the population variance of a data set given a normal distribution with 45 data points, a mean of 15, median of 15 and sample variance of 7.5?
anonymous
 3 years ago
how would you calculate the population variance of a data set given a normal distribution with 45 data points, a mean of 15, median of 15 and sample variance of 7.5?

This Question is Closed

dumbcow
 3 years ago
Best ResponseYou've already chosen the best response.1the difference between sample variance and pop variance is you divide by N1 and N respectively Let X be sum of squared deviations \[\frac{X}{N1} = 7.5\] where N = 45 \[X = (7.5)(44)\] so pop variance is X/N \[\frac{X}{45} = \frac{(7.5)(44)}{45}\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Thank you, that makes sense now. I was trying to make it much more difficult than it actually is.
Ask your own question
Sign UpFind 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.