Many people using this medication do not have serious side effects. Tell your doctor immediately if any of these unlikely but serious side effects occur: vision changes (e.g., blurred vision), eye pain, easy bruising/bleeding, mental/mood changes, swelling of ankles /feet, unusual tiredness.
Standard Deviation and Variance. Deviation just means how far from the normal. Standard Deviation. The Standard Deviation is a measure of how spread out numbers are. Its symbol is Ï (the greek letter sigma) The formula is easy: it is the square root of the Variance.
From our example, the value 16 has Absolute Deviation = |x - Î¼| = |16 - 9| = |7| = 7. And now let's add them all up ... Sigma. The symbol for Sum Up is Î£ (called Sigma Notation), so we have: Sum of Absolute Deviations = Î£|x - Î¼| Divide by how many values N and we have: