1. Accuracy represents
(a) Repeatability of a measurement, using a given instrument.
(b) How close a measurement is to the true value.
(c) An ideal number of measurements to make.
(d) How poorly an instrument is operating.
2. To convert from ft2 to yd2, you should
(a) Multiply by 3.
(b) Multiply by 1 / 3.
(c) Multiply by 9.
(d) Multiply by 1 / 9.
(e) Multiply by 6.
(f) Multiply by 1 / 6.
3. Which is not true about an order-of-magnitude estimation?
(a) It gives you a rough idea of the answer.
(b) It can be done by keeping only one significant figure.
(c) It can be used to check if an exact calculation is reasonable.
(d) It may require making some reasonable assumptions in order to calculate the answer.
(e) It will always be accurate to at least two significant figures.
4. [L2] represents the dimensions for which of the following?
(a) cm2.
(b) Square feet.
(c) m2.
(d) All of the above.