Examlex
On-the-job training involves having a person learn a job by actually working at it and then learning the theory behind the job through an online training portal.
Variability
A measure of how much scores in a data set differ from each other and from the mean, indicating the spread or dispersion of the data points.
Sample Means
The arithmetic average of a set of values or measurements taken from a sample of a larger population.
Z-test
An analytical procedure in statistics that checks for differences between the means of two groups when the variances are established and there is a considerable number of samples.
Standard Error
A measure of the dispersion or variation of the sampling distribution of a statistic.
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