[R] Which test should I use for comparing the change of two samples

[chuck.01]

1) get differences 
2) run t-test on #1

* Be warned: I am not a statistician.   


 

Tammy Ma wrote
> Dear All,
> 
> I have two samples as the following:
> conjps<-c(9.41,10.45,10.78,10.73,11.11,11.12,11.59,11.04,11.63)
> 
> ms<-c(4.11,5.10,5.70,6.46,6.04,6.16, 6.24,6.32,7.33)
> 
> I want to test the change of sample is same to the another one.
> conjps_ch<-c(1.04,0.33.....)
> ms<-c(0.99,0.60,0.76....)
> 
> 
> which test I should use, which conclusion can we drive based on the test?
> 
> I used the following test:
> 
> 
> •Test Equality
> of Two Variances
> 
>  F
> test to compare two variances
> 
> 
> 
> data: 
> conjps and ms 
> 
> F = 0.5419, num df = 8,
> denom df = 8,
> p-value = 0.4045
> 
> alternative hypothesis: true ratio of
> variances is not equal to 1 
> 
> 95 percent confidence interval:
> 
>  0.1222368 2.4024170 
> 
> sample estimates:
> 
> ratio of variances 
> 
>         
> 0.5419076 
> 
> 
> 
> is it correct? which conclusion can I get based on this?
> 
> 
> Thanks for help.
> 
> Kind regards,
> Tammy
>  		 	   		  
> 	[[alternative HTML version deleted]]
> 
> 
> ______________________________________________

> R-help@

>  mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.





--
View this message in context: http://r.789695.n4.nabble.com/Which-test-should-I-use-for-comparing-the-change-of-two-samples-tp4647756p4647798.html
Sent from the R help mailing list archive at Nabble.com.