that some hypothesis test will produce a false positive by chance.

This is called a positive Romberg's test.

A positive test indicates that the chemical is mutagenic and therefore may act as a carcinogen, since cancer is often linked to mutation.

A previous BCG vaccination can cause a false positive Mantoux test, although a very high-grade reading is usually due to active disease.

A characteristic fishy odor is considered a positive whiff test and is suggestive of bacterial vaginosis.

Bacillus species can be obligate aerobes or facultative anaerobes, and test positive for the enzyme catalase.

The latter test is relatively insensitive, successfully detecting only 60-80 % of infections in asymptomatic women, and often giving falsely positive results.

In those samples that test positive, further testing should be done to determine antibiotic resistance.

A definition of AIDS agreed upon in 1985 by the World Health Organization in Bangui did not require a positive HIV test, but since 1985, many African countries have added positive HIV tests to the Bangui criteria for AIDS or changed their definitions to match those of the U. S. Centers for Disease Control.

The season ends during Monica and Chandler ’ s wedding where Phoebe and Rachel find a positive pregnancy test in the bathroom.

In the eighth season, it is revealed that the positive pregnancy test found at Monica's wedding belongs to Rachel.

A 2005 study stated that " differential validity in prediction suggests that the WAIS-R test may contain cultural influences that reduce the validity of the WAIS-R as a measure of cognitive ability for Mexican American students ," indicating a weaker positive correlation relative to sampled white students.

As with the K-S test, the discrepancy statistics D < sup >+</ sup > and D < sup >−</ sup > represent the absolute sizes of the most positive and most negative differences between the two cumulative distribution functions that are being compared.

Ketones give positive results in Brady's test, the reaction with 2, 4-dinitrophenylhydrazine to give the corresponding hydrazone.

Methyl ketones give positive results for the iodoform test.

He noted that Clemens has never tested positive in a steroid test.

A positive flame test for sodium has a bright yellow color.

In addition, 5 % of patients with a positive tilt table test may have seizure-like activity that seems to be due to cerebral hypoxia.

A skin test of the employee by the CDC returned positive this morning for non-contagious cutaneous anthrax.

However, on March 26, 1983, the first test, known as the Cabra event, was performed in an underground shaft and resulted in marginally positive readings that could be dismissed as being caused by a faulty detector.

Women who test positive should be given prophylactic antibiotics during labor, which will usually prevent transmission to the infant.

The distribution of tuberculosis is not uniform across the globe ; about 80 % of the population in many Asian and African countries test positive in tuberculin tests, while only 5 – 10 % of the United States population tests positive.

Specimens collected within 8 days following onset of illness may not test positive for West Nile IgM, and testing should be repeated.

so that the absence of the hymen is by no means positive proof that a girl has had sex relations.

Proximate in the sense that there are more distant, more `` positive '' ends we seek, to which victory over Communism is but a means.

and though this process by no means represents an unambiguous gain and is, in fact, marked by the estrangement from the depths that seems to be the cost of human maturation, it is still a positive step forward ; ;

It is a proposal that justice now be served by means other than those that have ever preconditioned the search for it, or preconditioned more positive means for attaining it, in the past.

Since there are infinitely many positive integers, this means that there are positive integers that cannot be defined by phrases of under eleven words.

: Theorem ( A. Korselt 1899 ): A positive composite integer is a Carmichael number if and only if is square-free, and for all prime divisors of, it is true that ( where means that divides ).

This is a concept of distance expressed by means of a smooth positive definite symmetric bilinear form defined on the tangent space at each point.

( The convention of a negative sign in the exponent is often convenient because it means that is the amplitude of a " positive frequency ",.

If the electrode has a positive potential with respect to the SHE, then that means it is a strongly reducing electrode which forces the SHE to be the anode ( an example is Cu in aqueous CuSO < sub > 4 </ sub > with a standard electrode potential of 0. 337 V ).

For s-polarization, a positive r or t means that the electric fields of the incoming and reflected or transmitted wave are parallel, while negative means anti-parallel.

For p-polarization, a positive r or t means that the magnetic fields of the waves are parallel, while negative means anti-parallel.

Falsifiability is considered a positive ( and often essential ) quality of a hypothesis because it means that the hypothesis is testable by empirical experiment and thus conforms to the standards of scientific method.

Gödel defines a positive property thus: " Positive means positive in the moral aesthetic sense ( independently of the accidental structure of the world )...

For all positive data sets containing at least one pair of unequal values, the harmonic mean is always the least of the three means, while the arithmetic mean is always the greatest of the three and the geometric mean is always in between ( see Inequality of arithmetic and geometric means.

Furthermore, for a sequence of positive weights with sum we can define weighted power means as follows:

For exponents equal to positive or negative infinity the means are maximum and minimum, respectively, regardless of weights ( and they are actually the limit points for exponents approaching the respective extremes ):

In the case of the rational numbers this means that any number has two irreducible fractions, related by a change of sign of both numerator and denominator ; this ambiguity can be removed by requiring the denominator to be positive.

The term was introduced by Benjamin Peirce in the context of elements of an algebra that remain invariant when raised to a positive integer power, and literally means "( the quality of having ) the same power ", from idem + potence ( same + power ).

" LDS Church apostle Gordon B. Hinckley noted that the " more good " translation is incorrect but added that " Mormon means ' more good '" is a positive motto for members of the LDS Church.