# Tagged Questions

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### Standard Deviation and Variance in Sample and Population Formulas for all?

What are the differences between those Population and Standard Deviation and what are their fomulas? I was told that they are different formulas and which situation do you use population or sample? ...
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### Best method to analyse whole population data

I have data of an entire population (N=27). I would like to find out which variables (of many) have the greatest effect on one certain dependent variable, and how much of its variance can they ...
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### Population Variance and Sample Variance

How is it that lowering the number of frequence,$n$ by $1$ in the for formula for Population and Sample Variance account for the discrepency of using sample rather than population. I mean how is ...
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### Population vs sample variance

This is perhaps a very basic question, but I am a bit confused. I have a time series of day some time varying data, say the amount of sunlight as the day passes. I bucket the data in say 10 bins say ...
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### In benchmark tests should I use formulas assuming a population or a sample?

I have a single JavaScript benchmark test that I run a number of times and store the results in an array. I then calculate the mean, variance, and standard deviation of the results of the runs. My ...