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Which of the following formulas is correct for aggregate income?
Bell-shaped Curve
A graphical depiction of a normal distribution of data, where the bulk of data points lie near the mean, creating a symmetrical bell shape.
Percentiles
Statistical values that represent the position of a score in relation to other scores in a distribution, indicating the percentage of scores that lie below it.
Z-scores
Standardized scores that indicate how many standard deviations an element is from the mean of a dataset, used in comparing scores from different distributions.
Percentile Rank
A statistical measure indicating the relative position of a score within a larger group, showing the percentage of scores it is equal to or greater than.
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