So I understand the concept of a distribution. I just don’t understand the concept of a standard deviation from the mean of that distribution. How can we tell what is 1 standard deviation away as opposed to 2 standard deviations?
I’d be very thankful for an explanation, thank you :).
In: 9
The standard deviation is sort of a bit like the average distance that a point is from the average value. Not quite, but I think that paints a decent picture. You use a formula to calculate what that is, and then you just look at 1, 2, or 3 times that added on or taken away from the mean. If the distribution is a normal distribution, then about 68% of the values are between (mean-SD) and (mean+SD).
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