Accuracy and Precision in the Food Industry

Today we determined if we actually received what we pay for with food, using chips. The answer is no! The bags of chips were not accurate. We calculated the acceptable range to determine the accuracy. Using the bags net weight that was provided, we added 0.10 grams to the initial bag net weight to find the highest range and subtracted 0.10 to find the lowest range. We then took the chips out, and ate them... thats why the bag is empty in the picture below. Yum! We ended up weighing the empty bag  which is known as the tare weight. The weight of the bag moved two decimal places because it no longer included the chips. Regardless if you moved the decimal more places it wouldn't have impacted the precision or accuracy because it would have been outside out the range. Precision and accuracy are similar but somewhat different. Precision is the closeness of two or more measurements. Accuracy is the true value.