Examlex
Percentiles divide a distribution into 100 equal parts.
Standard Deviation
An indicator that evaluates how much the data in a set diverges or spreads out in comparison to the average value, showing the extent of distribution of the observations.
Student's T Distribution
A probability distribution used in statistical analysis for small sample sizes, where the population variance is unknown.
Normal Distribution
A bell-shaped curve, describing the spread of a characteristic throughout a population, where most data points are around the mean and the probability of extreme values decreases as one moves away from the mean.
Population Standard Deviation
A measure of the spread of a set of values within a population, calculated as the square root of the variance.
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