Significant Digits
-non zero digits are always significant
-if the zero is a place keeper it is generally not significant
-any numbers to the right of a decimal point are significant if they come after a non zero number
-When adding or subtracting round to the least precise number
-Example 7.4212-3.54=3.8812 --->3.88
12.3+10.771=23.071--->23.1
-When you multiply or divide round to the number with the fewest S.D's
-Example 2.5x5.55=13.875--->14
-Constants on the data sheet have infinite S.D's
Scientific Notation
-used if we need to write a number like 1000 with only 2 S.D's
-used if we want to write the number thirty three billion four hundred million without taking up an entire line
-shows really big or really small numbers easily
Here is a video on Scientific notation and S.D http://www.youtube.com/watch?v=IIQPHC5gZT8
-Kerr Pili
Hey guys,
ReplyDeleteI'm glad to see you have all the required posts so far. The entries look more or less okay. Instead of posting links to youtube videos try embedding them. It will improve the quality of your presentation. Also, you don't have to find a video for everything. Pictures are often more explanatory than a video.