First, consider deliberate thinking. Deliberate thinking is relatively slow, rule-based and explicit; a contemplative process of weighing pros and cons, gathering scientific or statistical evidence. It would appear that this makes for pretty solid decision-making.
Jul 24, 2015. Outliers increase the standard deviation. Mean is most affected by outliers, since all values in a sample are given the same weight when calculating mean. A value that is far removed from the mean is going to likely skew your results and increase the standard deviation. Say you have five values: 2, 1, 2, 1.5, and 2.1.
The standard error decreases as the sample size increases and approaches the size of the population. Sigma (Ï) denotes the standard error; a subscript indicates the statistic. For example, the standard error of the mean is represented by Ï M. To find the standard error of the mean, divide the standard deviation by the square root of the sample size: , where Ï is the standard deviation of the original sampling distribution and N is the sample size.