Following a Precision Study in Which Repeatability and Reproducibility of 20

question 5

Multiple Choice

Following a precision study in which repeatability and reproducibility of 20 samples are assessed,which one of the following formulae would be used to determine the total standard deviation ( $\sigma$ ²_T) ?

• A) .\(\sigma\)²_within-run/2 + \(\sigma\)²_between-run
• B) (x2_i - x1_i)
• C) .\(\Sigma\)(x₁ -\(\mu\))²/N
• D) .\(\Sigma\)²_within-run + \(\Sigma\)²_between-run

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Definitions:

Digoxin

A medication used to treat various heart conditions, particularly heart failure and atrial fibrillation.

Therapeutic Range

The concentration range of a drug within the blood that is considered effective and safe.

Diphenhydramine

An antihistamine drug used to relieve allergic reactions, treat insomnia, and alleviate symptoms of the common cold.

Side Effect

An unintended and usually adverse effect of a drug or therapy that occurs in addition to the desired therapeutic effect.