For the Grubbs test, the statistic G is defined as the absolute deviation of the questionable value from the sample mean divided by the sample standard deviation. Which of the following represents G?

• A. G = (X_i - X_bar) / s
• B. G = |X_i - X_bar| / σ
• C. G = |X_i - X_bar| / s
• D. G = sqrt((X_i - X_bar)^2) / s

Answer: (C)