Lab Technician Math Part 3

Define the following terms: accuracy precision data point data set mean variance and standard deviation. Identify three key factors that affect confidence in the reliability of an analytical measurement. Describe the two types of variations that affect the reliability of analytical data. Explain how to calculate variance and standard deviation. Describe how assumptions affect the validity of answers that are based on math operations associated with statistics. Describe the fundamental differences between applying SPC to production processes and applying SPC to lab work. Define the following terms: confidence limits confidence interval and confidence level. Control Charts Part 1 Identify the basic features of a typical control chart and explain how a normal distribution curve and a control chart are related. Explain how an individual X chart is constructed and plotted. Describe lab technician responsibilities associated with control charts. Control Charts Part 2 Explain how to interpret an individual X chart. Identify some common patterns of instability that may be seen on control charts. Describe in general terms how individual X charts are maintained.