So we have arithmetic mean (AM), geometric mean (GM) and harmonic mean (HM). Their mathematical formulation is also well known along with their associated stereotypical examples (e.g., Harmonic mea...
What does it imply for standard deviation being more than twice the mean? Our data is timing data from event durations and so strictly positive. (Sometimes very small negatives show up due to clock
What is implied by standard deviation being much larger than the mean?
There is an old saying: "Correlation does not mean causation". When I teach, I tend to use the following standard examples to illustrate this point: number of storks and birth rate in Denmark; numb...
I also guess that some people prefer using mean squared deviation as a name for variance because it is more descriptive -- you instantly know from the name what someone is talking about, while for understanding what variance is you need to know at least elementary statistics. Check the following threads to learn more:
I understand that variance can be zero if all data points are equal. Can anybody state an example, where sample variance is equal to sample mean and what - if any - is its significance to distrib...
A given preduction is distributed with mean equal to the mean response, so if we're only considering values within a 95% confidence interval, the distribution of our prediction could be centered as far left as the lower limit of the CI or as far right as the upper limit of the CI.
estimation - Why do we estimate the mean response in Confidence ...