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 Post subject: Statistics
PostPosted: Wed Feb 22, 2012 3:22 am 
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Anyone out there good with stats? I'm having trouble here trying to find cumulative frequency and percentile ranks. The internet isn't helping me either, and my teacher has yet to post the lecture slides online.

EDIT: I figured out the percentile ranks/cum. frequency, but now I've got to get standard scores for two variables, and I've got no idea. Help? lmao.


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 Post subject: Re: Statistics
PostPosted: Wed Feb 22, 2012 7:30 am 
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So basically, the problem is


Z = Mean - Population mean divided by standard deviation.


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 Post subject: Re: Statistics
PostPosted: Wed Feb 22, 2012 11:26 am 
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Yeah, I figured that out. I talked to my proffesor today. He was just very vague on what exactly he wanted me to find the percentile ranks on.


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