## Comment on Indicators (Part 2)

dear karthik sir…

For example if the 20 day SMA is 7800, and the SD is 75 (or 0.96%), then the +2 SD would be 7800 + (75*2) = 7950. Likewise, a -2 SD indicates we multiply the SD by 2, and subtract it from the average. 7800 – (2*75) = 7650.(karthik sir how to calculate sd 75, bit confuse…thank you sir)