Examlex
Which of the following is an essential technique for holding a learner's attention?
Variance
A statistical measure of the dispersion of a set of data points in relation to their mean.
Mean
The arithmetic average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.
Variance
A measure of the dispersion or spread of a set of data points around their mean value.
Degrees of Freedom
The number of independent values or quantities that can vary in the calculation of a statistic, often necessary for assessing the significance of the statistic.
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