Measurements Flashcards
1
Q
What is Accuracy?
A
refers to how closely a measured value agrees with the correct value.
2
Q
What is Precision?
A
refers to how closely individual measurements agree with each other
3
Q
Rules when Adding or subtracting (rounding)
A
the last digit retained is set by the first doubtful digit
4
Q
Rules when Multiplying or Dividing (rounding)
A
The answer contains no more significant figures than the least accurately known number
5
Q
Rules for zero in rounding
A
leading zeros are never significant
Embedded zeros are always significant
Trailing zeros are significant only if the decimal point is specified
