Ok, so the question should technically be "how does the expected value relate to the mean, median etc. of data drawn randomly from a particular probability distribution?" I'm looking for …

The mean you described (the arithmetic mean) is what people typically mean when they say mean and, yes, that is the same as average. The only ambiguity that can occur is when …

Nov 24, 2015 · If you have a negative r^2, it would mean that the model explains a negative % of the outcome variable, which is not an intuitively reasonable suggestion. However, adjusted r^2 …

You can just use a standard confidence interval for the mean: Bear in mind that when we calculate confidence intervals for the mean, we can appeal to the central limit theorem and use …

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 …

Also, since the maximum mean of your silhouette occurs when k=2, you might want to check whether your data is clustered, which can be done using the gap statistic (another link).

Jan 13, 2015 · The above calculations also demonstrate that there is no general order between the mean of the means and the overall mean. In other words, the hypotheses "mean of means …

Oct 27, 2016 · Let's say I have a model that gives me projected values. I calculate RMSE of those values. And then the standard deviation of the actual values. Does it make any sense to …

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 …

N = 259 Mean = 72 StdDev = 7 I don't remember anything about this, and my career doesn't deal with any of this. I want to know how can I interpret these results with those values. What does …