Stats Terms

Question 1

Validity

Answer 1

The extent to which a method gives you the “correct” answer i.e. measures what you want it to measure

Question 2

Absolute validity

Answer 2

the extent to which a measurement or method accurately reflects the true value or reality of what it is intended to assess, without bias or error

Question 3

Relative validity

Answer 3

the degree to which the results of one measurement or method agree with those of a reference or gold-standard method, rather than directly reflecting an absolute true value

Question 4

Sensitivity

Answer 4

How good your method is at identifying people who are cases

Question 5

Specificity

Answer 5

How well does this method identify people who are fine (not cases)

Question 6

Accuracy

Answer 6

Describes the extent to which the measurement is close to the true value

Question 7

Predictive value

Answer 7

the effectiveness of a diagnostic test in predicting the presence or absence of a disease or condition

Question 8

Precision, Repeatability, Reproducibility, Reliability

Answer 8

The degree to which repeated measurements give the same value each time you use it

Question 9

Analytical accuracy

Answer 9

The difference between the reported and the true amount of the nutrient present in the sample is a measure of the analytical accuracy (“trueness”) of the laboratory test

Question 10

Analytical sensitivity

Answer 10

The smallest concentration that can be distinguished from the blank “minimum detection limit”

Question 11

Analytical specificity

Answer 11

The ability of an analytical method to measure exclusively the substance of interest