Exam 3: Laboratory Statistics, Method Development and QC

A graph that shows the difference between your laboratory result and a comparative method results along the x-axis and the percent difference along the y-axis is referred to as which of the following?

Analysis of variance (ANOVA) is an appropriate statistics to evaluate three or more sets of data among each other, but it does NOT reveal:

Recovery experiments, testing proficiency samples and estimating bias are all examples of procedures used to assess:

Which of the following is a procedure that is used to substantiate the continued accuracy of the test system throughout the laboratory reportable range of the tests result of the test system?

The term patient demographics refers to which type of information that is entered into a laboratory information system?

A significant limitation of least squares regression analysis is:

The term that describes a procedure in which the CLS compares two consecutive laboratory results on a patient is:

A glucose result that is greater than the lower limit of detection of the method should be reported as which of the following?

The McNemar statistics using a two by two contingency table is useful for evaluating which of the following?

The results of a precision study urea nitrogen are shown below. What is the per cent coefficient of variation for the study? Mean = 15 mg/dL Standard deviation = 1.5 mg/dL Variance = 2.0 mg/dL

A deteriorating light source in a spectrophotometer can result in which of the following types of errors?

Linearity is useful for assessing:

Which of the following statements usually determines the acceptable range when evaluating quality control results?

A type II error is defined as which of the following?

A 1_3s quality control rule violation is defined as:

Which of the following statistics is used to qualify the strength of the relationship between two variables?

Which of the following practices is inappropriate when establishing quality controls ranges?

A cross-reacting compound in a serum sample may result in which of the following?

Which of the following is an example of an inferential statistic?

A urea nitrogen result is falsely elevated and it was discovered that the previous sample on the sample carousel has abnormally high serum glucose. Which of the following can cause this error?