Eyeballing Standard Deviation

<a href="https://www.prepswift.com/quizzes/quiz/prepswift-eyeballing-standard-deviation" target="_blank">Eyeballing Standard Deviation Exercise</a>Let's admit it. Standard deviation is annoying. There. I said it.  But there is good news. Eyeballing Standard Deviation is actually pretty easy. Which set of numbers is more "spread out"? Hint: Don't do any math. 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transform="matrix(0.017,0,0,-0.017,0,0)"></path></g></g></g></g></svg> </svg></center> We can clearly see that Dataset $B$ is more clearly "spred out." That means its standard deviation is higher than that of Dataset $A$.  Recall that the GRE has these things called Quantitative Comparison questions, where we don't have to calculate actual values a lot of the time. It suffices to say one quantity is "larger" than the other. Or perhaps the two quantities are "equal" to each other, if it's obvious they have the same spacing or symmetry (implying standard deviations are the same). Example Quantity $A$: The standard deviation of the dataset below: $$7, 21, 63, 189$$ Quantity $B$: The standard deviation of the dataset below: $$2, 6, 18, 54$$ If we "eyeball" it, we can clearly see that the numbers in Quantity $A$ are more "spaced out," giving them a higher standard deviation than those of Quantity $B$.