× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
d
4
N
3
3
R
3
k
3
o
3
Z
3
j
3
s
3
d
3
J
3
1
3
Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
New Topic  
Ftariq92 Ftariq92
wrote...
Posts: 813
Rep: 0 0
6 years ago
A study has three groups, each with an equal number of participants. The population variance is estimated from the variance within each group, giving three estimates, 54.4, 48.6, and 50.9. What is the within-group estimate of the population variance?
 
  A) (54.4 + 48.6 + 50.9)/(31) = 76.95
  B) (54.4 + 48.6 + 50.9)/3 = 51.3
  C) (54.4 + 48.6 + 50.9)/(3 + 1) = 38.48
  D) (54.4 + 48.6 + 50.9)/(3 + 2) = 30.78
Read 32 times
1 Reply

Related Topics

Replies
wrote...
#1
6 years ago
B
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1393 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 315
  
 2637
  
 217
Your Opinion
Which is the best fuel for late night cramming?
Votes: 231
Previous poll results: Do you trust social media networks with protecting your privacy?