To interpret the results of this inter-laboratory trial complete the text below:

Title of page

Please make a choice for all boxes.

You are not completely right. In the table you can read that the CV within is lower than the CV between. Correct your answer.

You are not completely right. Remember that a high CV means a low precision (i.e. a high variability). Correct your answer.

You are not completely right. In the table you can read that the CV between labs is higher than the achievable CV you calculated in the previous question. Correct your answer.

You are not completely right. In products with a low fat concentration (e.g.wheat, rye and French beans) the CV within is much higher than the achievable CV. Correct your answer.

You are not completely right. The variability within labs can not be explained by the use of different methods. Because in this inter-laboratory trial each lab did the same analysis twice (using the same method). Within laboratory variations can be explained by difference between technicians or differences in chemicals used, temperature etc. Correct your answer.

You are not completely right. The variability between labs can only partly be explained by the use of different methods. Also when two labs use the same methods, there is considerable variation in the fats that was found. You can read this in the graphs. Correct your answer.

You are right! In general you can conclude that the state of the art determination of total fat is poor with respect to precision.

Question Text
Question Text
Question Text
Question Text
Question Text
Question Text
Question Text

Below you find the results of an interlaboratory trial in which the fat contents of several products is determined by various experienced food labs. Study the results and answer the following questions.