analytical chemistry

Question 1

Curt is working on analyzing the amount of Propranolol in various process fluids. Now Curt wants to investigate whether he can replace his existing method with a new analysis method. To evaluate the new method, Curt collects six different process fluids which he then analyzes using the existing and the new method. In the table below, the determined concentration of Propranolol (mg/L) is presented for the various process fluids with the existing and the new method.

a) Determine if there is any difference in accuracy between the methods.

b) Can one determine with existing measurement data whether there is any difference in precision between the methods? Motivate your answer.

\begin{tabular}{|c|c|c|} \hline Process fluid & Existing & New \\ \hline 1 & 11 & 1.3 \\ \hline 2 & 0.8 & 0.7 \\ \hline 3 & 1.0 & 1.0 \\ \hline 4 & 1.5 & 1.7 \\ \hline 5 & 2. & 2.5 \\ \hline 6 & 3.0 & 3.2 \\ \hline \end{tabular}