A community for students.
Here's the question you clicked on:
 0 viewing
TranceNova
 4 years ago
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?
TranceNova
 4 years ago
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?

This Question is Closed

TranceNova
 4 years ago
Best ResponseYou've already chosen the best response.2Does my question make sense?

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

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

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

TranceNova
 4 years ago
Best ResponseYou've already chosen the best response.2Hmmm 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

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

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

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

TranceNova
 4 years ago
Best ResponseYou've already chosen the best response.2Just 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
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.