Probability and Statistics
A two-tailed test is a statistical method used to determine if there is a significant difference between the means of two groups in either direction. This type of test evaluates both possibilities: whether the first group's mean is significantly less than or greater than the second group's mean, allowing researchers to detect effects in both directions. It is crucial for understanding how data can deviate from a null hypothesis without specifying a direction of deviation.
congrats on reading the definition of two-tailed test. now let's actually learn it.