An Analyst Decides to Calculate the %Error as a Measure

question 33

Multiple Choice

An analyst decides to calculate the %error as a measure of bias. A certified reference material (CRM) contains a drug metabolite at a concentration of 12.8 micromolar 0.03 micromolar. The analyst tests this sample and obtains a result of 12.1 micromolar 0.1 micromolar. What is the %error (to one decimal place) ?

• A) 5.5
• B) -5.5
• C) -5.8
• D) 5.8
• E) none of the above