CHE SIGNIFICA TYPE II ERROR IN INGLESE
Errori di tipo I e di tipo II
Nelle statistiche, un'ipotesi nullo è un'affermazione che la cosa che viene studiata non produce alcun effetto o non fa alcuna differenza. Un esempio di ipotesi nullo è l'affermazione "Questa dieta non ha alcun effetto sul peso della gente". Di solito un esperto mette un'ipotesi nullo con l'intento di rifiutarlo: cioè, intendo eseguire un esperimento che produce dati che dimostrano che la cosa in studio fa la differenza. Un errore di tipo I è il rifiuto errato di una vera ipotesi nullo. Per quanto riguarda l'ipotesi non nullo, rappresenta un falso positivo. Di solito un errore di tipo I porta a concludere che esiste un effetto presunto o una relazione quando in realtà non lo fa. Esempi di errori di tipo I includono un test che indica un paziente ad avere una malattia quando in realtà il paziente non ha la malattia, un allarme antincendio che scompare indica un incendio quando in realtà non c'è fuoco o un esperimento che indica che un trattamento medico Dovrebbe curare una malattia quando in realtà non lo fa. Un errore di tipo II è il mancato rifiuto di una falsa ipotesi nulla. Rispetto all'ipotesi non nullo, rappresenta un falso negativo.
definizione di type II error nel dizionario inglese
La definizione di errore di tipo II nel dizionario è l'errore di non rifiutare l'ipotesi nulla quando è falsa. La probabilità di evitare un tale errore è la potenza del test ed è una funzione dell'ipotesi alternativa.
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10 LIBRI IN INGLESE ASSOCIATI CON «TYPE II ERROR»
Scopri l'uso di
type II error nella seguente selezione bibliografica. Libri associati con
type II error e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
Statistics for Evidence-Based Practice and Evaluation
We can only infer the probability of a Type I or a Type II error and thus the
probability that the statistical conclusion is invalid. When a finding is statistically
significant, the p-value is the probability that the statistical conclusion (rejecting
the null ...
2
Statistical Methods for Health Care Research
The wrong response would be to accept a false null hypothesis (type II error).
Suppose you compared two groups of patients with diabetes taught by different
methods (A and B) on how to care for themselves at home, and the data indicated
...
Barbara Hazard Munro,
2005
3
Studying a Study and Testing a Test: How to Read the Medical ...
Failure to reject a null hypothesis merely implies that the evidence is not strong
enough to reject the assumption that no difference exists in the larger population.
A Type II error occurs when we are prevented from demonstrating a statistically ...
4
Research Methods and Statistics: A Critical Thinking Approach
By doing this, however, you have now increased your chance of making a Type II
error. Do you see why? If I reduce my risk of making a false alarm—saying a
difference is there when it really is not—I increase my risk of missing a difference
...
The probability of a type II error depends on four factors. Unfortunately, the
smaller the alpha, the greater the chance of a false-negative conclusion; this fact
keeps the experimenter from automatically choosing a very small alpha. Second,
the ...
Paul G. Barash, Bruce F. Cullen, Robert K. Stoelting,
2012
6
Intermediate Statistics For Dummies
A Type II error represents the situation where (continuing with the coin example)
the coin was actually unfair, but your data didn't have enough evidence to catch it
, just by chance. You can think of a Type II error as a missed opportunity — you ...
7
An Introduction to Statistical Methods and Data Analysis
FIGURE 5.5 f(y) Type I error Type II error As with any two-way decision process,
we can make an error by falsely rejecting the null hypothesis or by falsely
accepting the null hypothesis. We give these errors the special names Type I
error and ...
R. Ott, Micheal Longnecker,
2008
8
Research Methodology: Methods and Techniques
The former is known as Type I error and the latter as Type II error. In other words,
Type I error means rejection of hypothesis which should have been accepted and
Type II error means accepting the hypothesis which should have been rejected ...
9
Practical Conservation Biology
A type II error is made when a false null hypothesis is accepted, and the incorrect
conclusion that there is no difference among the groups is reached. A type II error
in environmental impact assessment would lead to a conclusion that there was ...
David Lindenmayer, Mark A. Burgman,
2005
10
Designing Clinical Research
Incorrect inference Ctype I error): Conclude that there is an association between
dietary carotene and colon cancer when there actually is none. Incorrect
inference (type II error): Conclude that there is no association between dietary
carotene ...
10 NOTIZIE DOVE SI INCLUDE IL TERMINE «TYPE II ERROR»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
type II error nel contesto delle seguenti notizie.
How Breast Exams Are Like Dog Sniffs
A second kind of error is a Type II error. This type—also known as a “false negative”—occurs when a screening device misses the presence of the condition for ... «Justia Verdict, apr 15»
Climate Shock: Will We Persist in Collective and Willful Blindness?
Economists rather dispassionately call them “Type I errors” and “Type II errors.” The first is acting when action was not warranted, actively doing something ... «The Globalist, apr 15»
14 concepts that will be obsolete after catastrophic climate change
(2) The capacity of humans to remain optimistic and adapt to changed ... In the 20th century it was believed that a Type I error was worse than a Type II error. «Washington Post, lug 14»
Improved Quality of Life with Ranolazine
The study may also have been underpowered as well, which may lead to potential type II error. Nonetheless, ranolazine has shown to improve a patient's health ... «Diabetes In Control, giu 14»
A Grieving Mother Acts, While The FDA Dithers
A Type I error involves permitting something bad to happen (i.e. approving a product that turns out to be harmful), while a Type II error delays or prevents ... «Forbes, mag 14»
Failures of Intelligence
Type II errors are the reluctance or inability to predict the possibility of pleasant surprises, which become possible when leaders change, when they realize ... «ArmsControlWonk.com, gen 14»
Trouble at the lab
Scientists divide errors into two classes. A type I error is the mistake of thinking something is true when it is not (also known as a “false positive”). A type II error is ... «The Economist, ott 13»
4 Rules for hiring your startup's next great employee (and avoiding …
In statistics there are two types of general errors: Type I and Type II (got to love a statistician's sense of brevity!). A Type I error is a false positive. Type II error is a ... «The Rude Baguette, giu 13»
Placebo Effect Stronger Than We Thought?
Should the drug prove sufficiently safe, it moves to Phase II, the first formal test of its ... to protect against Type I errors, the likelier it is to produce a Type II error. «Pacific Standard, gen 13»
Federal Agencies: Waning Integrity, Dwindling Trust
Type II errors in the form of excessive governmental requirements and unreasonable decisions can delay commercialization of a new product, lessen ... «Forbes, lug 10»