# Rate

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Related to false-positive rate: False Negative Rate, false positive error

## Rate

Value, measure, or degree; a charge, payment, or price determined through the application of a mathematical formula or based upon a scale or standard.

For example, an interest rate is determined by the ratio between the principal and interest.

Rate is also used synonymously with tax.

RATE. A public valuation or assessment of every man's estate; or the ascertaining how much tax every one shall pay. Vide Pow. Mortg. Index, h.t.; Harr. Dig. h.t.; 1 Hopk. C. R. 87.

References in periodicals archive ?
It has a 5% false-positive rate, so that a relatively large number of amniocentesis procedures must be performed to identify one case with a Down syndrome fetus.
There was a 72% detection rate for Down syndrome with a 5% false-positive rate.
Table 7 shows the results of maintaining a signature with a 20% recall value and with a 0.08% false-positive rate using the F-measure.
Say, in the first "generation" of research, the false-positive rate is 0.
"However, due to high false-positive rates, a dog alert alone is unlikely to be helpful in differentiating hypo-/hyper-/euglycemia.
"The reason this apparent false-positive rate from this study is so high is mostly because the Kepler team has been very generous with the last few data releases with what has been called a 'candidate'," Morton says.
The test correctly identifies about 80 percent of women who are carrying a baby with Down syndrome and has a false-positive rate of about five percent.
Many patients now take advantage of these tests, and the very low false-positive rates have resulted in a marked decrease in the rate of invasive diagnostic testing.
Yet knowledge of the false-positive rate is not sufficient to determine a test's usefulness, as the above HIV test example illustrates.
A new noninvasive maternal blood test, cf-DNA, detects Down syndrome and several other chromosomal defects 98 percent to 99 percent of the time, with a false-positive rate of less than 0.5 percent.
False-positive rate (1-specificity) was defined as the proportion of abnormal screens among screens without a cancer diagnosis in the following 24 months (false-positives/(false-positives + true-negatives)).

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