QUALITY CONTROL

Question 1

Are data that can be described by their location and dispersion compared with the average.

Answer 1

Descriptive Statistics

Question 2

Where the data is plotted on.

Answer 2

Histogram

Question 3

Gaussian Curve Characteristics:
Shape:
Type of curve:

Answer 3

Shape: Bell
Curve: Symmetric

Question 4

Data set is accurately described by the SD (Standard Deviation)

Answer 4

Precision

Question 5

Data set is accurately described by the mean

Answer 5

Accuracy

Question 6

Centered around the mean

Answer 6

Precise

Question 7

Close to the mean

Answer 7

Accurate

Question 8

What is the total area under the curve?

Answer 8

1.0 or 100%

Question 9

Confidence Interval

Answer 9

95.5% (SD2)

Question 10

Most strict (Gaussian curve)

Answer 10

68.2% (SD1)

Question 11

Least strict (Gaussian curve)

Answer 11

99.7% (SD3)

Question 12

Is the arithmetic average of a set of data calculated.

Answer 12

Mean

Question 13

The simplest statistic used to describe the spread of data about the mean.

Answer 13

Range

Question 14

It is calculated by subtracting the smallest observation or value from the largest.

Answer 14

Range

Question 15

Is the most commonly used Statistic in the laboratory describing dispersion of groups of single observation.

Answer 15

Standard Deviation

Question 16

Is a comparison of the relative variability in two sets of values

Answer 16

Coefficient of Variation

Question 17

A plot that compares results obtained from different laboratory

Answer 17

Youden/Twin

Question 18

Uses V-mask for earliest indication of systematic errors (trend).

Answer 18

CUSUM (cumulative sum)

Question 19

Degree of flatness or sharpness

Answer 19

Kurtosis

Question 20

It includes control rules and control charts.

Answer 20

Multiple Shewhart using Westguard

Question 21

It is a graphic representation of the acceptable limits of variation

Answer 21

Shewhart Levy Jennings

Question 22

Defined as values far from the main set of values.

Highly deviating values

Answer 22

Outlier

Question 23

Referred to as the absurd value

Answer 23

Linearity/Physiologic Limit

Question 24

Utilizes Westguard ruling with at least 40 samples

Answer 24

Test Method

Question 25

Utilizes Westguard ruling with at least 100 samples (now: 120)

Answer 25

Reference Method

Question 26

A type of testing where control and patient specimens assayed, evaluated and reported together

Answer 26

Analytical run

Question 27

ABBREVIATIONS: NFPA OSHA EQAS [WHO-CAP] NEQAS [DOH]

Answer 27

NFPA - National Fire Protection Association OSHA - Occupational Safety and Health Administration EQAS - External Quality Assurance Services NEQAS - National External Quality Assessment Scheme