navin

...................................................................................................................................................................................... If a given set of data is normally distributed in that case is there any relation between standard deviation and range. I think in that case there is relation between SD and Range. If we show data in Bell Curve than highest value is (mean+3SD) and the lowest data is (mean - 3SD). If we take the difference of {( mean+3SD) & (mean- 3SD)} it will give the value of range. So in data sufficiency questions if range is given for certain normal distribution we should be able to find SD. Please correct me if i am wrong !!!!