A weighted average is a more accurate measurement of scores or investments that are of relative importance to each other. This is often the case with investment portfolios, grade scoring and other statistics. You can find out how to calculate weighted averages. 1. Sit down with your data, a piece of paper and a pencil.
To specify the boot sequence: 1  Start the computer and press ESC, F1, F2, F8 or F10 during the initial startup screen. 2  Choose to enter BIOS setup. 3  Use the arrow keys to select the BOOT tab.  To give a CD or DVD drive boot sequence priority over the hard drive, move it to the first position in the list.
For best performance, put your normal boot device at the head of the list. That way, the bios does not waste time trying to detect a device that is not there. If you occasionally need to boot from a different device, you must take the time to change the order in the bios. If you are constantly rebooting with a dvd or USB, then you might put them first.