/sci/ - Science & Math

Say I had a population of 10 people with ten scores.
The mean comes out to 900 with a standard deviation of 100.
That obviously means that one standard deviation is between 800 and 1000.
That said, assume I had two outliers of 799 and 1001.
Evaluate my assumption and tell me if this is considered correct.

With a population of 10 sets of scores, 80% of the data (8/10 = .80) falls within one deviation from the mean. In other words, out of ten scores, eight scores fall between 800 and 1000, with a mean of 900 and a standard deviation of 100. (N = 10).

Is this description accurate?