Examlex
All but one of the following tool sets could be used to help an educational institution identify the cause of excessive student tardiness. Which one could not?
Mean
The average value in a set of numbers calculated by dividing the sum of all values by the number of values.
Z-scores
Standardized scores that indicate the number of standard deviations an element is from the mean.
Shaded Area
Often used in graphs and charts to represent a particular section, range, or subset of data visually.
Distribution
Describes how the values of a dataset or population are spread or dispersed.
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