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Why might it be surprising that the black hole at the center of the Milky Way is not luminous?
Chi-Square Values
Statistical measures used in hypothesis testing, especially to determine whether categorical variables are independent.
Interval Estimation
A range of values, calculated from sample data, that is likely to contain the value of an unknown population parameter.
Test Statistic
A value, derived from sample data, used in hypothesis testing to determine whether to reject the null hypothesis.
Sample Standard Deviation
A measure of the variability or dispersion of a sample data set, quantifying the extent to which the numbers vary from the sample mean.
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