Examlex
Which one of these statements is correct?
Z Scores
An index showing the variance of a specific value from the mean of a group, calculated through its number of standard deviations from the mean.
Probability
A measure of the likelihood that an event will occur, defined on a scale from 0 to 1.
Confidence
The degree to which one can be certain about the accuracy of a result, often quantified in statistics through a confidence interval.
Skewness
A measure of the asymmetry of the probability distribution of a real-valued random variable about its mean.
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