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, often referred to as summation notation, can be used in many common situations. For example, it can be used to calculate the sum of deposits for a bank account. Banks add together all deposits and withdrawals to determine the current balance.
Two-sigma limits and three-sigma limits are indicators of measurement accuracy used in control charts. When comparing 2 sigma vs 3 sigma control charts, 3 sigma control charts help ensure process stability whereas 2 sigma control charts are used to detect small shifts in the project or process.