1.5 Uncertainty In Measurement

Question 1

What is accuracy?

Answer 1

Refers to how closely individual measurements agree with the correct or true value

Question 2

What are the significant figures for multiplication and division?

Answer 2

The significant figures of a multiplication problem are determined by the number with the least amount of significant figures

Ex. 390.12
X. 7.126
——–
2,779.99512

4 significant figures. Because 7.126 has only 4 and is number with least significant numbers.

Question 3

What are the significant figures for addition and subtraction?

Answer 3

Significant figures of an addition or subtraction problem are determined by the number with the least significant numbers

7. 1
8. 82
9. 322+. Significant figures answer = 20.3.
10. 1
    - ——
11. 342

Question 4

What is Percision?

Answer 4

Is a measure of how closely individual measurements agree with one another