calculating N(d1) or N(d2)Forums › Ask ACCA Tutor Forums › Ask the Tutor ACCA AFM Exams › calculating N(d1) or N(d2)This topic has 1 reply, 2 voices, and was last updated 10 years ago by John Moffat.Viewing 2 posts - 1 through 2 (of 2 total)AuthorPosts September 12, 2014 at 11:52 am #194737 student07MemberTopics: 193Replies: 162☆☆☆Sir could u pls help me with call option or put option while calculating why do we someting subtract standard deviation from 0.5 and sometime we add to 0.5. Thanks September 12, 2014 at 12:56 pm #194755 John MoffatKeymasterTopics: 57Replies: 54483☆☆☆☆☆The rule is given at bottom of the normal distribution tables in the exam, and I go through it in my free lecture on here.You will not be asked why we do it (although it is to find the probably of being in excess of something – a bit like we do in value at risk).AuthorPostsViewing 2 posts - 1 through 2 (of 2 total)You must be logged in to reply to this topic.Log In Username: Password: Keep me signed in Log In