Examlex
One major advantage of focus groups is that they may be directed at understanding a wide variety of issues such as reactions to a new food product,brand logo,or television ad.
Null Hypothesis
A statement used in statistics that suggests there is no effect or no difference, and any observed variance is due to chance.
Alpha
In statistics, alpha represents the significance level, the probability of rejecting the null hypothesis when it is actually true, often set at 0.05.
Alternative Hypothesis
The hypothesis that is tested against the null hypothesis in statistical hypothesis testing, representing a statement that indicates some effect or difference.
Critical Value
A threshold value in hypothesis testing that defines the boundary for rejecting the null hypothesis; it is determined by the chosen significance level.
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