Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
TranceNova
Group Title
Standard Error: Okay, so I keep getting confused. If I have 2 samples from one treatment and 2 from another then I calc the difference between the means for these two samples, how do I find the standard error of the difference of the two means?
 3 years ago
 3 years ago
TranceNova Group Title
Standard Error: Okay, so I keep getting confused. If I have 2 samples from one treatment and 2 from another then I calc the difference between the means for these two samples, how do I find the standard error of the difference of the two means?
 3 years ago
 3 years ago

This Question is Closed

TranceNova Group TitleBest ResponseYou've already chosen the best response.2
Does my question make sense?
 3 years ago

LagrangeSon678 Group TitleBest ResponseYou've already chosen the best response.1
basically your looking for standard deviation?
 3 years ago

TranceNova Group TitleBest ResponseYou've already chosen the best response.2
Well the standard error is the standard dev/ sqrt(n), but I presume any rules applying to stdev also apply for standard error.
 3 years ago

LagrangeSon678 Group TitleBest ResponseYou've already chosen the best response.1
basically are you looking for a formula
 3 years ago

TranceNova Group TitleBest ResponseYou've already chosen the best response.2
Hmmm if there is one? The problem is I can get the standard error of both means but when I minus one mean from the other I don't know the standard error of the resulting number
 3 years ago

LagrangeSon678 Group TitleBest ResponseYou've already chosen the best response.1
there is a formula for this situation and i believe it can be applied here
 3 years ago

LagrangeSon678 Group TitleBest ResponseYou've already chosen the best response.1
its a formula for a finding the standard deviation of the sampling mean differences
 3 years ago

TranceNova Group TitleBest ResponseYou've already chosen the best response.2
Thanks, I'm looking it up now
 3 years ago

TranceNova Group TitleBest ResponseYou've already chosen the best response.2
Just posting this so when I come looking for it again it'll be saved on here :P SE = sqrt[(s12/n1) + (s22/n2)] where s1 is the standard deviation of sample 1, s2 is the standard deviation of sample 2, n1 is the size of sample 1, and n2 is the size of sample 2. Cheers LagrangeSon, now my chart has error bars hehe P.s. You know there are 52 other facts you haven't read :P
 3 years ago
See more questions >>>
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.