Managing for Quality and Performance Excellence 9th Edition by James Evans,William Lindsay

Exercise 22

Note: Data for many of the problems in this chapter can be found in the Excel workbook C08Data.xlsx on the Student Companion Site. Click on the appropriate worksheet tab as noted in the problem (e.g., Prob. 8-6, etc.) to access the data.
A genetic researcher at GenLab, Ltd. is trying to test two laboratory thermometers (that can be read to 1/100,000th of a degree Celsius) for accuracy and precision. She measured 25 samples with each and obtained the results found in the C08Data.xlsx file for Prob. 8-12 on the Student Companion Site for this chapter. The true temperature being measured is 0°C. Which instrument is more accurate? Which is more precise? Which is the better instrument?