representation. n. 1. the act or an instance of representing or the state of being represented. 2. anything that represents, such as a verbal or pictorial portrait. 3. anything that is represented, such as an image brought clearly to mind.
The standard deviation and range are both measures of the spread of a data set. Each number tells us in its own way how spaced out the data are, as they are both a measure of variation. The range relies on a very simple formula of subtracting the minimum data value from the maximum.
Standard Deviation Calculator. The following is a free online tool to calculate the standard deviation, variance, mean, sum, and confidence range for given numbers. The value used to calculate the confidence range is the sample standard deviation value.tandard Deviation. The following is the definition of the standard definition Ï, also called population standard deviation if the entire population can be measured, where Âµ is the expectation, x i is one sample value, and N is the total number of samples. Ï 2 is called variance.