Question: correct Statement? In the book How to Lie with Charts, the author writes that the standard deviation is usually shown as plus or minus the

correct Statement? In the book How to Lie with Charts, the author writes that “the standard deviation is usually shown as plus or minus the difference between the high and the mean, and the low and the mean. For example, if the mean is 1, the high is 3, and the low is -1, the standard deviation is {2.”

Is that statement correct? Why or why not?

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