Examlex
If a college has historically employed its own security staff, but now decides to fire these people and contract with a firm that specializes in security to take over this function, this is best considered to be an example of:
Student T Distribution
A probability distribution used in statistics for estimating population parameters when the sample size is small and the population variance is unknown.
Normal Distribution
Exhibiting symmetry around the mean, this probability distribution reveals that there are more occurrences close to the mean than far away from it.
Chi-squared Distribution
A statistical distribution that is used to describe the distribution of a sum of squared random variables, often used in hypothesis testing.
Degrees of Freedom
The number of independent pieces of information used in the calculation of a statistic, typically the size of the data set minus the number of parameters estimated.
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