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Variance is standard deviation squared. If standard deviation can be zero then the variance can obviously be zero because zero squared is still zero. The standard deviation is equal to the sum of the squares of each data point in your data set minus the mean, all that over n. The idea is that if all of your data points are the same then the mean will be the same as every data point. If the mean is the equal to every data point then the square of each point minus the mean would be zero. All of the squared values added up would still be zero. And zero divided by n is still zero. In this case the standard deviation would be zero. Short story short: if all of the points in a data set are equal than the variance will be zero. Yes the variance can be zero.
Zero is an integer separating positive from negative numbers. Thus literally it means "nothing"
If you mean "what is the deriviative of f(x) = 0?", the answer is 0. (zero) The deriviative of any constant is zero.
Patient Zero - The Outer Limits - was created on 2001-03-23.
Patient Zero - 2011 III was released on: USA: 23 February 2011
the patient would have to pay
The first person (animal) to get a disease.
Project SERA - 2013 Patient Zero 1-3 was released on: USA: 30 January 2013
The Road to Hell - 2013 Patient Zero 1-4 was released on: USA: 16 August 2013
Swamp Thing - 1990 Patient Zero 3-29 was released on: USA: 20 February 1993
With contagious infections, it is impossible to trace to "Patient Zero", the very first patient to get the infection.
Law and Order - 1990 Patient Zero 14-3 was released on: USA: 8 October 2003 Japan: 7 June 2013
it zero
It means zero.
If you mean 'six o'clock' - las seis If you mean six zero zero - seis zero zero If you mean 600 - seiscientos