Yes. Consider the definition of the standard deviation. It is the square root of the variance from the mean. As a result, it can be said that the standard deviation is dependent on the mean.
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Information is not sufficient to find mean deviation and standard deviation.
No. Variance and standard deviation are dependent on, but calculated irrespective of the data. You do, of course, have to have some variation, otherwise, the variance and standard deviation will be zero.
Standard deviation can be greater than the mean.
The standard deviation tells us nothing about the mean.
B because the spread, in this case standard deviation, is larger.