Examlex
Robert, a surfer, has a mole that has changed its shape and size. His doctor, applying the ABCDE rule, diagnosed a melanoma. What do the letters ABCDE represent?
Mean Difference
The average of differences between pairs of observations in a dataset.
Standard Deviation
A statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.
Paired T-test
A statistical test used to compare the means of two related groups to determine if there is a significant difference between them.
Significance Level
The probability of rejecting the null hypothesis in a statistical test when it is actually true; a measure of the risk of a Type I error.
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