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Statistics course and homework discussion. Elementary statistics.enWed, 04 May 2016 14:47:37 GMTvBulletin60http://www.talkstats.com/images/misc/rss.pngStatistics Help @ Talk Stats Forum - Statistics
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Power Analysis
http://www.talkstats.com/showthread.php/64910-Power-Analysis?goto=newpost
Wed, 04 May 2016 10:00:25 GMTHi there,
I am currently writing a statistics report which has to cover 2 questions:
Firstly, what the correlation is between two different test...Hi there,

I am currently writing a statistics report which has to cover 2 questions:
Firstly, what the correlation is between two different test scores of 30 participants.
Secondly, what the power of the study is.

I am really struggling to grasp what the pro's of doing a post-hoc power analysis is?

My results at the moment is a correlation of 0.577, and a power of 0.96 - However I don't know how exactly to interpret the power here.

Any help on talking me through what the power analysis actually means?

Thanks!
]]>Statisticsroseberryhttp://www.talkstats.com/showthread.php/64910-Power-AnalysisWhich test should I use?
http://www.talkstats.com/showthread.php/64908-Which-test-should-I-use?goto=newpost
Wed, 04 May 2016 07:40:50 GMTI want to see if the age distribution is the same in my test and control group.
First I wanted to do a independent T-test, but my age variant is not...I want to see if the age distribution is the same in my test and control group.
First I wanted to do a independent T-test, but my age variant is not normal.

Which test should I do instead of the independent T-test?

Thanks in advance!
]]>StatisticsJune147http://www.talkstats.com/showthread.php/64908-Which-test-should-I-useComparing % of other studies with your own?
http://www.talkstats.com/showthread.php/64902-Comparing-of-other-studies-with-your-own?goto=newpost
Tue, 03 May 2016 17:14:18 GMTHi guys,

I'm really sorry if this is in the wrong section. I'm struggling with knowing which test to use or if there is any?

I have conducted a study on co-occurrences of disorders so the main findings are percentages.

I would like to compare those percentages with other studies that I have researched to see if they are significantly different or not.

Is there a test for this if I do not have access to the data set from the other studies.

Thanks for any help
]]>Statisticstc2http://www.talkstats.com/showthread.php/64902-Comparing-of-other-studies-with-your-own