Define standard deviation with its merits and demerits

Standard deviation

standard deviation is an ideal scientific and most popular Major of depression it was first used by curl Pearson in the year 1893 standard deviation is defined as the square root of the automatic mean of the square of deviation of item from there it matic mean..

standard evolution and ideal and scientific

measure sd is based on all item of the series device and are always taken from automatic means which is rigidly define major catereal tendency aligebric Singh of Plus and minus are considered milk Tekken duration D is fully capable or further algebraic treatment..

standard deviation reason

of popularity HD is most popular among various measure of discretion range is based on 2 extra and values of the series and it ignores all other values quarter division considerali middle of the item and other item I left out mean deviation is based all value but at the time of calculating division algebrics of Plus and minus value is also certain because in can be come put it on the basis of any average...

merit of standard deviation

based on all values the calculation of standard deviation is based on all values of a series does it is a reliable measure of dispression.. used in higher algebraic analysis standard deviation is aminable to algebraic treatment and process many mathematical proper writers all accounts or these proprietor combined standard deviation can be completed and their for as the is used in many Advanced Studies like skin well correlation test of significance etc...

limitation of standard deviation..

difficulty in calculation squares and square roots are calculated in standard deviation which are comparatively difficult to find however these does not reduce the importance of SD because of its high degree of accuracy..