Examlex
Based on its mean density,the dwarf planet Pluto is:
Normal Distribution
A bell-shaped frequency distribution curve that is symmetric about the mean, showing that data near the mean are more frequent in occurrence.
Goodness-of-fit Test
A statistical test used to determine if a set of observed frequencies differs significantly from the expected frequencies.
Test Statistic
A value calculated from sample data during a hypothesis test, used to make a decision about the null hypothesis.
Z
In statistics, 'Z' often refers to a Z-score, which measures the number of standard deviations a data point is from the mean.
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