RETURN DEVAITION Forums › Ask ACCA Tutor Forums › Ask the Tutor ACCA AFM Exams › RETURN DEVAITION This topic has 0 replies, 1 voice, and was last updated 14 years ago by salu007. Viewing 1 post (of 1 total) Author Posts November 20, 2011 at 6:28 pm #50592 salu007Member Topics: 58Replies: 32☆☆ Hi Sir, When calculating variance of the return to calculate the Standard deviation we use the formula formula. (R-ER)2 * Probaility where ER is the expected returnn what is R.can you please clarify. Best Regards Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In