Chapter 1.10, Problem 8PE

Interpretation Introduction

Interpretation: Whether or not one of the values in the given set of replicate measurement should be ignored is to be decided using Grubb’s test.

Concept introduction: The outlier value is the suspected value that has $G$ greater than critical $G$ value.

The value of $G$ is calculated by the formula,

$G=\frac{\text{Measurement}\text{of}\text{suspected}\text{value}-\text{Mean}\text{of}\text{all}\text{measurements}}{\text{Standard}\text{deviation}}$

To determine: If the measurement, $215\text{mg}/\text{dL}$ in the given set of replicated measurements should be ignored.