In statistics, the power of a binary hypothesis test is the probability that the test correctly rejects the null hypothesis () when a specific alternative hypothesis () is true. It is commonly denoted by , and represents the chances of a true positive detection conditional on the actual existence of an effect to detect. Statistical power ranges from 0 to 1, and as the power of a test increases, the probability of making a type II error by wrongly failing to reject the null hypothesis decreases.
the powerofa binary hypothesis test is the probability that the test correctly rejects the null hypothesis ( H 0 {\displaystyle H_{0}} ) when a specific...
hypothesis test typically involves a calculation ofatest statistic. Then a decision is made, either by comparing the test statistic to a critical value...
error, powerofatest and confidence intervals. Jerzy Neyman in 1934 showed that stratified random sampling was in general a better method of estimation...
atesting facility, with many of its Formula One cars tested there. It was used to test both cars and drivers seen on the programme, mainly in Power Laps...
engineering, the power factor of an AC power system is defined as the ratio of the real power absorbed by the load to the apparent power flowing in the...
optical power meter (OPM) is a device used to measure the power in an optical signal. The term usually refers to a device for testing average power in fiber...
In statistical hypothesis testing, a type I error, or a false positive, is the rejection of the null hypothesis when it is actually true. For example...
This is the full list of "official" Power Lap times on the Top Gear test track. Top Gear define a qualifying vehicle as a road-legal production car on...
The Bechdel test (/ˈbɛkdəl/ BEK-dəl), also known as the Bechdel-Wallace test, is atest to measure the representation of women in film and other fiction...
specificity mathematically describe the accuracy ofatest that reports the presence or absence ofa medical condition. If individuals who have the condition...
Horsepower (hp) is a unit of measurement ofpower, or the rate at which work is done, usually in reference to the output of engines or motors. There are...
Test cricket is played between international cricket teams who are Full Members of the International Cricket Council (ICC). Unlike One Day Internationals...
interval) this translates to a low target variance of the estimator. the use ofapower target, i.e. the powerof statistical test to be applied once the sample...
(rank of x = 1st, rank of y = 8th), then the paired t-test or the Wilcoxon signed-rank test will usually have greater power than the sign test to detect...
compare in a statistical hypothesis test. In the domain of inferential statistics, two rival hypotheses can be compared by explanatory power and predictive...
measures peak anaerobic power and anaerobic capacity. The test, which can also be performed on an arm crank ergometer, consists ofa set time pedalling at...
The Turing test, originally called the imitation game by Alan Turing in 1950, is atestofa machine's ability to exhibit intelligent behaviour equivalent...
More precisely, the tests are a form of model selection, and can be interpreted several ways, depending on one's interpretations of probability: In descriptive...
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