What exactly does Standard Deviation (SD) helps us find in a cluster of data?

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I’ve been looking at Statistics in my free time and what exactly does standard deviation is useful for and/or how can I extract meaningful data by using SD and what conclusion can I derive from said data?

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Anonymous 0 Comments

Shoot one shot with a regular shotgun on a paper target. Saw the barell off and shoot again. The average distance from the center will differ. That difference will matter.

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