Examlex
Which one of the following qualifies as an experiment?
Population Variance
The variance computed for the entire population of data, representing the true variance of the data set.
Degrees of Freedom
The number of independent values in a statistical calculation that can vary without violating any constraints applied to them.
Chi-Squared Distribution
A statistical probability distribution which is the result of summing the squares of k independent standard normal variables.
Confidence Interval
A range of values used to estimate the true value of a population parameter with a certain level of confidence.
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