Examlex
Which of the following is probably a sign that an emotional divorce has taken place?
Bell-Shaped
Describes the graphical shape of a distribution that is symmetrical and has a single peak in the middle, resembling a bell; commonly associated with the normal distribution.
Standard Deviation
An index quantifying the spread or variability among a collection of numbers, where a smaller standard deviation suggests the numbers are closely clustered around the average.
Tchebysheff's Theorem
A statistical theorem stating that, for any real-valued random variable, the proportion of values lying within k standard deviations from the mean is at least 1-1/k^2, for k > 1.
Empirical Rule
A statistical guideline suggesting that within a normal distribution, nearly every data point can be found within three standard deviations of the central mean.
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