Examlex
The relationship between the actual focal spot size,effective focal spot size,and anode target angle is called
Degrees of Freedom
The number of independent values or quantities that can vary in the calculation of a statistic.
Numerator
The top number of a fraction, showing the number of parts out of the denominator considered.
Chi-square Distribution
A probability distribution that is used to describe the distribution of a sum of the squares of k independent standard normal random variables, often used in hypothesis testing.
Standard Deviation
A measure of the amount of variation or dispersion in a set of values, indicating how much the values differ from the mean.
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