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Q: What does a standard deviation of 0 tell you?

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A standard deviation of zero means that all the data points are the same value.

The standard deviation in a standard normal distribution is 1.

Standard deviation of 0 can only be attained if all observations are identical. That is, the variable in question has just one possible value so statistical considerations are irrelevant.

No.

Standard deviation can never be negative.

Related questions

The standard deviation is 0.

The standard deviation for a single observation is 0.

Standard deviation of a single event is 0.

Standard deviation doesn't have to be between 0 and 1.

Mean = 0 Standard Deviation = 1

Mean 0, standard deviation 1.

Standard deviation is 0.

The standard deviation tells us nothing about the mean.

If the standard deviation of 10 scores is zero, then all scores are the same.

A single number, such as 478912, always has a standard deviation of 0.

No.

A single number, such as 478912, always has a standard deviation of 0.

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