If the document opened in the IFRAME does not have any targets set, then all those links will open in the same iframe as the parent document. You can use this feature to make links in one IFRAME change the contents of another IFRAME on the same page. IFrames and Security. The IFRAME element, by
Sigma notation. mc-TY-sigma-2009-1. Sigma notation is a method used to write out a long sum in a concise way. In this unit we look. at ways of using sigma notation, and establish some useful rules. In order to master the techniques explained here it is vital that you undertake plenty of practice. exercises so that they become second nature.
The symbol they use for standard deviation is the lower-case Greek letter sigma . For any process with a standard distribution (something that looks like a bell-shaped curve), the probability is 68.26%. that the next value will be within one standard deviation from the mean. The probability is 95.44% that the same next. value will fall within two standard deviations. The probability is 99.73% that it will be within three sigma; and 99.994%.