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Hey people, I have a question does anyone remember the logic behind the denominator (N-1) for standard deviation? I need a simpliest terms explanation. Thanks....
Hello moccalatte2003, You can see the following link: http://en.wikipedia.org/wiki/Variance#Population_variance_and_sample_variance Have a good weekend. ...
The wikipedia article is certainly thorough (and yes, valid:), but I'm not sure it satisfies the request for "simplest terms" explanation. As an introduction...
Thank you for all the explanantions it is clear to me now! I am brushing up on my statistics and came across that equation. I couldn't explain the denominator....
Thank you for all the explanantions it is clear to me now! I am brushing up on my statistics and came across that equation. I couldn't explain the denominator....
Hi Amy,  It's in the equation to help compensate for sample sizes.  For example, if your sample size is huge, subtracting 1 from N won't cause the...
Scott, Someone reminded me of the max likelihood estimation...its N-1 to make the equation unbiased so as to avoid underestimating the std. I understood...
Hello all, I have some customer satisfaction survey data wherein customers have rated metrics such as on-time delivery,product quality, price paid etc on a...
Hi Ravi, there are several other analysis which you can do on this data such as SEM. Thank you, Vishwesh Ravi Shankar <ravi.analytics@...> wrote: Hello...
Assuming N is the sample size, N-1 is only to ensure unbiasedness property of the statistic 'sample variance' for the corresponding parameter"population...
Yes Ravi, SEM is a very good option. I would suggest to use AMOS for SEM, it is very user friendly and provides good model building tools. Of course you can...
[Side note: Whitehead declension: _My_ study has a large dataset, and so reaches strong conclusions. _Your_ study has a moderate dataset, with questions on the...
hi i am msc in biostatistics if this is posible i need some technical and director information for reach to success in this course please guid me with thanks...
1. Are perfectly associated 3. –1 … +1 4. All of the above 5. Gamma hi these answers are somewat correct. if anything wrong pls send me the correct...
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Guys... Please get this information confirmed before you rely on them... coz i doubt a few points like :- 1) ATM PIN thing - I am not sure if this really...
hi all, i am new member of this community. i have a problem and want its solution as soon as possible. we have two companies share closing prices of each day....
hai neha, you can use regression models.  in regression if hieght increses weight also increases, if hieght decreases weight decreses  so, it is Y on...
hi, no.. but the thing is we want to calculate number of days it takes to go from increased ratio 2(say) to MEAN ratio 1.5(say). regression model will only...
Hi, I guess Time Series Model will be a solution....but depends on the available backdata....model needs a good amount of paramiter understanding & may be...
yea, its time series data. we have daily closing prices of 2 companies and their ratios as data. even model is been fit. but now how to go for finding number...
Hi Neha, I dont think its a Time series problem, because in time series we use "time" to forecast a particular parameter and not vice versa. Here I will say...
"if height increases weight also increases" IF and ONLY IF this is how height and weight are connected - linked. First we ask a question: does weight depend...
