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.
If the value received is on the higher side then that means that your data has a lot of fluctuations and vice versa. To calculate standard deviation in excel we use STDEV function. In the same example we shall use the STDEV function so our formula will be =STDEV(B2:B12). Our answer is around 20 which indicates that the marks of the students fluctuates a lot.