Which of the following is an example of measurement bias?
a. a scale that reads zero when nothing is on it
b. a stopwatch that stops immediately when the stop button is clicked
c. a balance that always reads .01 g
d. measuring your height in your bare feet

A scale that reads zero when nothing is on it means that the scale reads that there is nothing on it. Statement a is not biased. A stopwatch that stops immediately when the stop button is clicked means that there is no delayed reaction of the stopwatch. It corresponds exactly as it is pressed. Statement b is not biased. A balance that always reads 0.01g means that the balance is not set to zero or it is damaged. If no matter how heavy ythe object is, the balance reads 0.01g, the measurement is not accurate anymore. Statement c is biased.