Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-14 Thread John Darrington
On Sun, Oct 14, 2018 at 10:07:09AM +0200, Dr. Oliver Walter wrote: Am 14.10.2018 um 09:41 schrieb John Darrington: > Which is why I suggested using one of the CDF functions. > There is no T function, but there is a F function, which I think is the > same if you set DF2 to

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-14 Thread Dr. Oliver Walter
Am 14.10.2018 um 09:41 schrieb John Darrington: Which is why I suggested using one of the CDF functions. There is no T function, but there is a F function, which I think is the same if you set DF2 to 1. But you probably know better than me about those details. Perhaps IDF.F (0.05, N -1, 1) is

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-14 Thread John Darrington
On Sun, Oct 14, 2018 at 09:28:47AM +0200, Dr. Oliver Walter wrote: Am 14.10.2018 um 08:46 schrieb John Darrington: > AGGREGATE OUTFILE * MODE ADDVARIABLES > /BREAK=g > /Mean = mean(V) > /sd = sd(v) > /n = n(v) > . > > compute

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-14 Thread Dr. Oliver Walter
Am 14.10.2018 um 08:46 schrieb John Darrington: AGGREGATE OUTFILE * MODE ADDVARIABLES /BREAK=g /Mean = mean(V) /sd = sd(v) /n = n(v) . compute ci_upper=mean + sd/sqrt(n). compute ci_lower=mean - sd/sqrt(n). list. Sorry for interrupting, but this doesn't give a 95% (or 9

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-14 Thread Werner LEMBERG
> If I understand the use case properly, I think that you can do what > you want with with an aggregate followed by a few simple compute > commands: [...] Thanks! Werner ___ Pspp-users mailing list Pspp-users@gnu.org https://lists.gnu.org/mailma

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-13 Thread John Darrington
On Sat, Oct 13, 2018 at 04:04:41PM +0200, Werner LEMBERG wrote: > SORT CASES BY var1 [var2]. > SPLIT FILE LAYERED BY?? var1 [var2]. > > T-TEST /TESTVAL=0 > ?? /VARIABLES= dependent variables /MISSING=ANALYSIS > ?? /CRITERIA=CI(insert your confidence

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-13 Thread Dr. Oliver Walter
The results of any analysis are printed in the PSPP output and are generally not saved in the dataset. Am 13.10.2018 um 16:04 schrieb Werner LEMBERG: SORT CASES BY var1 [var2]. SPLIT FILE LAYERED BY  var1 [var2]. T-TEST /TESTVAL=0     /VARIABLES= dependent variables    /MISSING=ANALYSIS    

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-13 Thread Werner LEMBERG
> SORT CASES BY var1 [var2]. > SPLIT FILE LAYERED BY  var1 [var2]. > > T-TEST /TESTVAL=0 >     /VARIABLES= dependent variables    /MISSING=ANALYSIS >     /CRITERIA=CI(insert your confidence level here, e.g. 0.95). Very nice, thanks! > Then you can use the means and the bounds of the confidence

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-12 Thread Dr. Oliver Walter
I don't think that PSPP can produce bar charts with confidence intervals or something similar (bar charts for means aren't the best idea anyway).  I think it is only possible to split the data file to compare groups and then calculate confidence intervals for the mean for these groups. Comman

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-12 Thread Werner LEMBERG
> It seems to be a mixed ANCOVA with a within-subjects factor called > "Location", a between-subjects factor called "Group" and a covariate > "Age". I think that the GLM command in PSPP is not able to compute > such an analysis. GLM can only compute between-subjects designs in > PSPP (cf. PSPP m

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-12 Thread Dr. Oliver Walter
It seems to be a mixed ANCOVA with a within-subjects factor called "Location", a between-subjects factor called "Group" and a covariate "Age". I think that the GLM command in PSPP is not able to compute such an analysis. GLM can only compute between-subjects designs in PSPP (cf. PSPP manual, p.

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-12 Thread Werner LEMBERG
> I just responded to your statements about the relations between CIs > and hypothesis test that a CI is *not* always associated with a > hypothesis. The equations I mentioned were only examples for a > confidence interval and its equivalent hypothesis test. [...] Thanks a lot to all who have re

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-12 Thread Dr. Oliver Walter
I just responded to your statements about the relations between CIs and hypothesis test that a CI is *not* always associated with a hypothesis. The equations I mentioned were only examples for a confidence interval and its equivalent hypothesis test. BTW:  It's not safe to always use z instead

Re: Confidence interval is mathematically equivalent to hypothesis test

2018-10-12 Thread Mark Hancock
This is a good point, yes. I'm not the original requester, but I think they were really asking for a simple way to get a CI when reporting summary/descriptive statistics (without having a second mean to compare to). In SPSS you can do this: https://en.wikibooks.org/wiki/Using_SPSS_and_PASW/Confiden

Confidence interval is mathematically equivalent to hypothesis test

2018-10-12 Thread Dr. Oliver Walter
A confidence interval is mathematically equivalent to its corresponding hypothesis test. The hypothesis test is significant if the corresponding confidence interval does not contain the parameter value of the null hypothesis. The confidence interval does not contain the parameter value of the n