OMbook_glossary

F

Five number summary

This is just the minimum, lower quartile, median, upper quartile and the maximum. They...

F-measure

Also known as the "positive specific agreement" measure. Details In our field you are likely to...

False discovery rate

This relates to the "multiple tests problem/issue": if you do multiple statistical tests in the...

Frailty analysis/models

Best seen as an extension of the methods of survival analysis which are statistical methods...

False negative rate/risk (inferential testing)

Same as the "Type II error rate", i.e. the risk that a statistical test will...

False positive rate/risk (inferential testing)

Same as the "Type I error rate": the risk of a statistical test rejecting the...

False negative (in screening)

When a screening test scores negative, i.e. below some cutting point, but the person does...

False positive (in screening)

When a screening test scores positive, above some cutting point, but the person does not...

Face validity

This expands the summary entry under validity. It's probably best to read the whole...

Floor and ceiling effects

A floor effect in multi-item outcome measures occurs when most people choose the lowest possible...

Factor analysis

Factor Analyses (FA) are a set of techniques that allows us to look in more...