The textual presentation, then, should supplement or expand upon, rather than duplicate, the contents of tables and figures. Tables and figures should always be referred to in the narrative text. It is defined as the sum of the measures divided by the number of measures. MODE - it is defined as the most frequently occurring score in the distribution. The most stable measure of central tendency is desired.
Additional statistics are to be computed later.
First compute the mean. Subtract the mean from each raw score in the distribution. Square the deviations. Total the squared deviations. Take the squared root of the variance to obtain the standard deviation.