Examlex
The upper part of a thunderstorm cloud is normally ____ charged, and the middle and lower parts are ____.
Percentile
A value below which a given percentage of observations in a group of observations falls, used to understand and interpret data by comparing individuals to a larger sample.
Observations
Data points or pieces of information gathered through the senses or instruments during an experiment or study.
Bell-Shaped
Describes the symmetric shape of a distribution that is highest in the middle and tapers off towards both ends, characteristic of a normal distribution.
Tchebysheff's Theorem
A statistical rule stating that for any set of data, regardless of distribution, a certain percentage of values will fall within a specific number of standard deviations from the mean.
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