Tagged Questions
0
votes
3answers
104 views
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 ...
1
vote
2answers
113 views
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 ...
0
votes
1answer
82 views
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 ...
2
votes
1answer
122 views
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 ...
10
votes
5answers
7k views
What is the difference between N and N-1 in calculating population variance?
I did not get the why there are N and N-1 while calculating population variance. When we use ...
9
votes
3answers
23k views
What is the difference between a population and a sample?
What is the difference between a population and a sample? What common variables and statistics are used for each one, and how do those relate to each other?
