kemometri 1

kemometri 1

nim_nama

Multiple Choice

The number of binding sites per molecule in a sample of monoclonal antibody is determined four times, with results of 1.95, 1.95, 1.92 and 1.97. Comment on the bias, precision and accuracy of these results.

• precise -- nilai benar = 2 -- bias ke arah nilai yang lebih kecil.

• precise -- nilai benar = 1.9 -- bias ke arah nilai yang lebih kecil.

• precise -- nilai benar = 1,9 -- bias ke arah nilai yang lebiih tinggi.

• precise -- nilai benar = 2 -- bias ke arah nilai yang lebih tinngi

Multiple Select

A standard sample of pooled human blood serum contains 42.0 g of albumin per litre. Five laboratories (A–E) each do six determinations (on the same day) of the albumin concentration, with the following results

centanglah jawaban yang benar (lebih dari 1 jawaban)

• A = P, A

• B = I, A

• C= P, Bias ke arah nilai yang lebih besar

• D = I, B ke arah nilai yang lebih besar

• E= I, A

Multiple Choice

3.Using the same sample and method as in question 2, laboratory A makes six further determinations of the albumin concentration, this time on six successive days. The values obtained are 41.5, 40.8, 43.3, 41.9, 42.2 and 41.7 g l-1. Comment on these results.

• B,P

• A,P

• B,I

• A,I