standard deviation what does it show
It's easier to show if you have a graph of all your data. Basically a standard deviation will show the values about a mean. For example just say your mean is 25 and your standard deviation is 7, then values +/- 7 of 25 will be considered reliable results.So anything from within the range of 18 to 32 is considered reliable.The smaller your standard deviation with the most values within range, the better.t's easier to show if you have a graph of all your data. Basically a standard deviation will show the values about a mean. For example just say your mean is 25 and your standard deviation is 7, then values +/- 7 of 25 will be considered reliable results.