Significance
7 important questions on Significance
When is a number significant?
- Zero's between non-zero digits
- NOT: leading zero's
- Trailing zero's in decimal numbers (to the right of the first non-zero digit in a decimal number)
- COULD BE: trailing zero's in a non-decimal number
How many significant numbers after addition/ substraction?
How many significant numbers after multiplication/ devision?
- Higher grades + faster learning
- Never study anything twice
- 100% sure, 100% understanding
What is the difference between an error and a mistake?
Mistake = improper use of the measuring device
How can you present measurement uncertainties?
What kind of errors exist?
How big are the chances that a measurement falls in 1sd, 2sd, 3sd?
2 sd: 95 %
3 sd: 99,7 %
The question on the page originate from the summary of the following study material:
- A unique study and practice tool
- Never study anything twice again
- Get the grades you hope for
- 100% sure, 100% understanding