Quality Control
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How often must control sera be used?
In every analysis
It refers to the extent which measurements approach the true value
Accuracy
The extent to which repeated determinations on an individual specimen vary using a particular technique is
Reproducibility
What is computed when the formula SD/M x 100 is used?
Coefficient of variation
Which of the following closely represent precision?
Standard deviation
Which of the following is a measure of dispersion?
Standard deviation
What will be the 2SD when the following data are used? 25, 27, 31, 26, 26, 28, 29, 26, 28, 25, 27, 30, 27, 28, 27, 28, 25 31
3.48
What will be the CV using the ff data? 25, 27, 31, 26, 26, 28, 29, 26, 28, 25, 27, 30, 27, 28, 27, 28, 25, 31
6.97%
This error is observed when there is a progression drift of reported values from the mean value
Trend
What is referred to as the relative SD?
Coefficient of variation
The confidence limits where random variation is acceptable is set as what SD?
2SD
The mathematical expression of the measure of the dispersion of values in a test series on either side of the mean value is known as
Standard deviation
What types of controls are included to monitor quantitative reactions
Both normal and pathologic
Reliability depends on
Both accuracy and precision
What do we call the process that monitors laboratory analysis on a day to day basis?
Quality control
What will be the computed mean when the following data are used? 25, 27, 31, 26, 26, 28, 29, 26, 28, 25, 27, 30, 27, 28, 27, 28, 25 31
27.5