Protected: shaima Active 6 years ago Topics: 5Replies: 1☆ ProfileForums Topics StartedReplies CreatedEngagements Forum Replies Created Viewing 1 post (of 1 total) Author Posts September 4, 2016 at 8:03 am #337446 shaimaMember Topics: 5Replies: 1☆ the rule for the variances is (S.D)^2! that’s it Author Posts Viewing 1 post (of 1 total)