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Statistics course and homework discussion. Elementary statistics.enThu, 24 Jul 2014 22:02:41 GMTvBulletin60http://www.talkstats.com/images/misc/rss.pngStatistics Help @ Talk Stats Forum - Statistics
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Determine standard deviation from percentages
http://www.talkstats.com/showthread.php/56922-Determine-standard-deviation-from-percentages?goto=newpost
Thu, 24 Jul 2014 16:48:58 GMTI have a normal distribution of data with a mean of 0. I know that 80% of the data falls within 3 units of the mean. So 80% of the data is from -3...I have a normal distribution of data with a mean of 0. I know that 80% of the data falls within 3 units of the mean. So 80% of the data is from -3 to 3. How do I figure out the standard deviation? It's been a couple decades since my last math class and I'm forgetting this stuff. Thanks!
]]>Statisticsbobbytableshttp://www.talkstats.com/showthread.php/56922-Determine-standard-deviation-from-percentagesFactor analysis - Mean = 0 and Std. = 1 ??
http://www.talkstats.com/showthread.php/56920-Factor-analysis-Mean-0-and-Std.-1?goto=newpost
Thu, 24 Jul 2014 16:01:07 GMTHi guys
I hope you can help me!
I am dooing a factor analysis in SPSS. I am using principal components, listwise, varimax and extract on...Hi guys

I hope you can help me!

I am dooing a factor analysis in SPSS. I am using principal components, listwise, varimax and extract on eigenvalue = 1.

The problem is, that when I make discriptive statistic on my factors, the mean, std and range is "wierd" numbers. The normal variable is a likert scale from 1-5, but after making factors, the mean is always 0, and std = 1.

Do you know what I do wrong?

In the way thank you for your help!

Kenderdu
]]>StatisticsKenderduhttp://www.talkstats.com/showthread.php/56920-Factor-analysis-Mean-0-and-Std.-1Maximum Likelihood Estimator - Geometrical Distribution
http://www.talkstats.com/showthread.php/56918-Maximum-Likelihood-Estimator-Geometrical-Distribution?goto=newpost
Thu, 24 Jul 2014 14:21:01 GMTDo you know a site which gives a step by step solution of finding the MLE for Geometric Distribution? I'm thinking about something like this http://en.wikipedia.org/wiki/Exponen...mum_likelihood but for Geometric Distribution.
]]>StatisticsStatsBeginnerhttp://www.talkstats.com/showthread.php/56918-Maximum-Likelihood-Estimator-Geometrical-Distribution