Semideviation instead of Standard Deviation

2, 4, 4, 4, 5, 5, 7, 9
  • 68% of the values are between (5–2.13) and (5+2.13). That is, between 2.87 and 7.13. In our data, 2 and 9 fall outside of that range.
  • 95% of the values are between (5-(2 x 2.13)) and (5 + (2 x 2.13)). That is, between 0.74 and 9.26. All of our sample data fits in that range, but we only have a few values.
from wikipedia
Returns for Japanese stocks 1950–1959

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EREVN

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Learn how to enjoy early retirement in Vietnam. With charts and graphs.